Fucking a prostitute's pussy

That day was like every other day, I was lying down playing games on my phone when suddenly there was a knock on the door. I opened the door curiously and in front of me was my best friend and an extremely pretty girl. After introducing her as his lover, the two of them started kissing and touching each other in front of me, making me extremely embarrassed and confused. Her soft tongue and extremely skilled blowjob skills made my friend unable to stand it any longer. He ejaculated into her mouth and fell asleep, leaving the girl with disappointment.