Secretly dating my boyfriends roommate

The first time I met his roommate, it was during their house warming party after the party. Once my boyfriend was asleep, we hooked up, and every time I came over, we did it behind his back. After a couple of months, we started dating secretly, and I used my boyfriends money he gave me for secret dates and even "girls" holidays. We dated behind his back for 9 months, and during that time, we managed to hook up on his birthday and managed to have him eat me out after getting creampied without knowing a lot.

I have a few stories with his roommate that deserve their own posts