I was halfway through getting railed when his roommate walked in and somehow that ended with two loads in me

My FWB and I have been doing this thing for a few months now, just good sex and no feelings and no weirdness which works perfectly for both of us, and that is the only context you need before I tell you what happened last week because it is a lot lol.

So I'm at his place on his bed with my legs up and he's been going for a while and I'm at that point where I've completely stopped being able to string words together, just sounds and his name and whatever noise comes out when he hits the right spot, and we're both a sweaty mess and I'm close and I have my legs locked around him and that is exactly when the door opens and his roommate walks in and just stands there and I'm staring at this guy, someone I have met maybe once at some party, making full eye contact with him from my current position which is legs in the air getting absolutely railed, and my FWB does not stop, not even slightly, he grabs my hips tighter and keeps going and glances back over his shoulder and says something to his roommate and I catch the words "if you want to wait around" and my brain just STOPS, like full system shutdown, WHAT, and I'm looking at the roommate and he's looking at me and I look back at my FWB who is still inside me still going and I'm thinking about this for like four seconds and then I just say out loud, while actively being fucked, "do you actually want a turn" because apparently that's a thing I do now :)

And the roommate said yes and so now I'm being fucked while watching this guy take his shirt off and I cannot explain what that did to me, like watching someone undress knowing they are about to be inside me in maybe two minutes while someone else is already there RIGHT NOW, my brain just completely left the building and my FWB felt me react to it and laughed and started going harder and I stopped thinking about anything coherent at all and just felt everything and it was a LOT.

My FWB came first, buried deep and staying there while it happened and I felt the warmth spread through me, that specific heat low down, and he pulled out and the roommate was right there before I had time to process anything and pushed inside me immediately and the difference hit me straight away, thicker and a different angle and he went at it so much harder from the start, like HARDER, and I was already sensitive from everything before so I was just grabbing the sheets and making sounds that were embarrassing and not caring at all and he was going at me and I was watching his face and it was so hot to feel how different two people can fuck and he came inside me too, groaning while his whole body tensed up and stayed like that for a second and I just lay there after with both of them having been in me and stared at the ceiling and thought WOW okay.

Eventually made it to the bathroom, wasn't walking my best, sat on the edge of the tub for a minute and just kind of laughed to myself about what my life is :)

Both of them texted me the next day and I'm going back over on Thursday sooo yeah