My Boyfriend And I Sharing A Room With My Brother And His Girlfriend Leads to Sex Part 2

The First Two Days of our trip was rather normal except that each couple fucked in the other bed once our lights were out. We were in our twenties and hormones were running. So many young people fuck in their dorms while their roommate is in the other bed.

It had happened to me once or twice. And I had done the same. But most people don't fuck while their sibling is in the same room.

I'm not blind. I know my brother is hot but that's Mark. However, after hearing his groan as he came inside his girlfriend rewired my brain. That part that didn't allow me to think of my big brother as sexy was turned off.

Also Lisa was attractive too. She was a hot blonde with nice breasts. She was a full C cup. She was taller than me at 5'5. I'm 5'2" with 34 D cup tits.

The second night we walked the boardwalk Lisa and I had gone into one of the many shops that sold little tiny bikinis. She picked up a couple that were barely going to cover her body.

"Oh I wish I could wear something like that," I told her, "But I can't wear that with Mark being here."

"Why not, Mia?"

Lisa looked genuinely perplexed.

"I can't be almost naked in front of my brother," I said.

"Yes, you can. It's a bathing suit. Everyone is almost naked on the beach. Trent will love it."

Lisa did a bit more coaxing me into being as daring as her. I was wearing bikinis anyway where a lot of my ass was showing so I decided it shouldn't be a big deal to have a little more skin uncovered.

The next day I was excited to wear my new bathing suit. Two nights had gone by with the four of us acting like we weren't fucking our respective partners at night but I did feel it shifted the vibe amongst the four of us. A sexual energy being left unsaid.

That third day I was excited at how slutty I would look in my little g-string. And having my brother see me made it even more exciting and taboo.

I wore a bright neon green bikini while Lisa wore an identical one in pink. A little triangle covered both our pussies. Lisa had a bit more coverage on her tits but not much. My nipples were covered but not much else. We had dressed in our swim coverups without the boys seeing what we had on. We wanted to surprise our boyfriends.

When we went to the beach and took off the coverups, Trent whistled at us

"Jesus, you girls look hot," my boyfriend said.

"You like our new swimsuits," Lisa asked Mark as she struck a sexy pose.

"Yes." His eyes looked down her body but then did a once over on mine.

My pussy instantly got wet and I could feel my nipples become erect.

Both our boyfriends were extra affectionate with us. There hands not staying to themselves. Nothing too scandalous for PDA but enough to know they had fucking on their minds.

At one point we were all in the water at the same time. We had fun playing in the waves. We were horsing around. Trent had grabbed Lisa in a playful way while Mark did the same to me as a high wave came by and we went under it.

As we came up, I had my arms around my brother. My breasts up against his chest. We were laughing and then Mark looked down and smirked.

"Oh my God," I yelled, looking down seeing I still had my top tied to me but the little green patches that covered my nipples didn't anymore.

Mark moved his hand to cover them up but as he did took his thumb and it ran it over my hardened wet nipples. My pussy tingled from my brother's bold touch.

"Is everything ok?" Lisa asked

"Yeah. Mia almost lost her top," Mark let me go as he laughed.

"Don't be embarassed, Mia, I think Trent's seen my tits like three times, already," she laughed.

"Yeah I did," Trent smirked.

We went out of the water and had a fun but normal beach day. Men checked both Lisa and I out but it got me excited when I caught Mark steal glances at me. I couldn't help but wonder what it would feel like to kiss him and if I would like my brother's cock as much as I liked Trent's cock.

Later that night we went to a bar and walked the board walk and played some carnival games. We went back to our room and drank and chatted.

Somehow our conversation became sexual.

"This is a safe space," Lisa said, "Whatever is said or happens stay here."

We all agreed to keep whatever confessions that may come out would stay between the four of us.

Our conversation turned into talking about sexual escapades we've had though mine weren't as wild as everyone else's.

"Did Mark ever tell you how we met?" Lisa asked.

"He said through mutual friends."

They both looked at each other and smirked.

"It was technically true," Mark said.

"What does that mean?"

Trent laughed, "Lisa was the third in a threesome."

"Ok. I need an explanation," I said, my eyes wide, wanting to know all the juicy details.

"I was fucking this girl. She said she wanted to have a threesome with me and her friend. Well, Lisa was that friend. It was one hell of a time but we had this connection. Her friend got mad because while I was fucking Lisa, this chick felt ignored and got pissed. She ended up leaving and cussing us out but Lisa and I went back at it and fucked a few times that night," Mark admitted.

"Holy shit. So do you see that friend anymore," I looked at Lisa.

"No. It was getting a little toxic with her anyway. But gosh darn could she eat pussy," Lisa said so nonchalantly.

"You've been with girls?"

"Oh yes. Love cock but good pussy is amazing too," Lisa gave me a look like she was daring me to take this game further.

"I've kissed a girl once. But it was real quick and as a joke," I blushed.

"Would you want to kiss a girl if it wasn't a joke?"

"Well, I've thought about it," I admitted.

"Fuck. If you want to try being with a girl, I'm good with that," Trent said, "I could watch."

"Jesus, dude, that's my sister," Mark said as if annoyed.

"You say that like you haven't been fucking the shit out of your girlfriend knowing I'm balls deep in your sister practically right next to you the last two nights" Trent blurted out.

That sobered up the room a bit. We all sat silent for a few moments as the elephant in the room was acknowledged.

"Mia, would you want to kiss me and see if you like kissing a girl?"

I froze in the moment, feeling my pussy get damp. I looked to Trent who had that look on his face when he wants to devour me. I then looked to my brother who had the same kind of desire in his eyes.

"Would you be mad if I kissed your girlfriend?"

He swallowed then spoke very low, "No. Like Lisa said this is a safe space and whatever happens here stays here."

I then looked at Lisa as her eyes were daring me to do something.

"How should we do this?"

We ended up being situated so that we both lay in the middle of her and Mark's bed, sitting on our knees. We faced each other as Mark sat on one side of the bed and Trent on the other.

We both leaned in and at first our kiss was cautious but after a few moments I could feel her tongue breaching my closed lips. Our tongues played together at first shyly and increased with intensity.

I moaned in her mouth as I felt her arms wrap around me. Then mine went around hers. Even though our kisses became more demanding, it still felt soft in a way a man could never be. We ended up laying on the bed. The boys adjusting so they can better watch us.

I felt my brother's girlfriend's hand grasp my breast which made me reach out for her. Then I felt her hand go in the front of my shorts.

"You're soaking for me," she whispered as she began to kiss my neck.

I couldn't believe this was happening but wanted it so bad. Never in my wildest thoughts would I have thought this trip would end up with me as I made out with my brother's girlfriend while being watched by my brother and boyfriend.

It must have been instinct when we began to undress each other. I reached down and touched the first pussy that wasn't my own. We laid on our side as we fingered each other and moaned into each other's mouths. I wanted to know all of her so much so I began to kiss down her body. She liked how I sucked and nibbled her nipples, how my tongue went lower down her body till I was at her cunt.

I never done this before but I did what I would like. She tasted so good and I loved how she moaned for me, put her hand on the back of my head, grinded her hips up into my face.

Behind me, Trent had his face on my pussy. Licking me at my pussy and also going up to my asshole. He put fingers to my clit.

"Does my baby sister eat your pussy well?"

I heard Mark say. He was kissing her and pawing at her breasts. He was naked and the hand Lisa didn't have on the back of my head was stroking my brother's cock. I wanted to get a good look of it but I also wanted to take care of Lisa. I Pushed fingers in her wet hole while my tongue played with her clit.

"Oh, fuck yes. She might be better than you," she laughed but then her laughter turned into a moan. She was getting closer and so was I.

I felt her clinched around my fingers and then I was coming. The boys only let us settle down from our orgasms for a few moments.

Trent took us over to our bed and started fucking wildly into me. Mark was doing the same to Lisa.

"Her pussy tastes good on your lips," Trent said as he kissed and licked up Lisa's cum from my face and lips.

I looked over to Mark and Lisa. She had stuck her fingers that were inside me in my brother's mouth. Mark looked like he couldn't get enough how I tasted on them.

"Does your little sister taste good? You sick fuck are you imagining your fucking your baby sister's pussy?"

Hearing such dirty words heightened how well my boyfriend fucked me. I came twice on Trent's cock before he came. This time we were not being shy. Each couple didn't hold back our moans or the filthy shit we say when we fuck.

Trent came hard and I could tell Mark did too. Afterwards, we laid in our beds spent.

"Fuck. That was hot," Lisa finally said, "That really was your first time eating pussy?"

I smiled, "Yes."

"You're a natural."

The four of us went back to almost normal as we chatted and joked around and drank more. However, we didn't bother covering our bodies up and the boys didn't hide if they affectionately played with their respective girlfriend's tits or pussy. Later Trent and I fucked again which had Mark and Lisa fucking . And when they fucked again later, Trent and I were at it again.

As I was falling asleep, I thought how wild things had gotten. We were still a few days away from our trip ending and it would get even wilder and more taboo.