Straight best friend turns into cock sucking slut in bed

Last night, while I was sleeping in my bed, I felt a strange sensation on my dick and I woke to see my straight best friend unzipping my pants and then, taking out my cock which he put right inside his mouth.
Instantly, my dick grew harder and got rock hard as my friend’s wet and juicy lips moved up and down my cock. He continued to suck my cock like this all night and finally when I couldn’t hold back anymore, I cummed inside his slutty mouth.