I love the free-use relationship that my roommate and I have. Because of it, we have been having sex several times nearly every day. When he got home from work after we made this agreement, the first thing he did was fuck me. He entered my room as I was playing video games on my bed, pulled down my leggings, and began to eat me whole. While I was playing games, he fucked my ass and went to grab some lube.
I have been keeping tabs on when he is using his computer so I can work under his desk. We have been using each other in every way possible since we came to this understanding, and I love this so much.