I was studying for a university exam, when my roommate arrived and I fucked him

A few months ago when I started university, we rented an apartment with a university classmate, he is very funny and I am very flirtatious, I started walking around the living room in a thong and I was excited to see how he looked at me, then he left the bathroom door open while I was taking a shower just for him to see me, another day we had a few drinks and we ended up fucking and from that day we fucked every day