It happens with best friends sometime.
It happens. I grew up knowing my best friend from the age of 4 to 23. When we were both mid teens, we were in my room chilling after being in the pool for a while. I had my right hand down my shorts playing with my dick and balls while we watched TV. He was sitting to the right of me and started laughing. I asked what was funny and he replied that i looked funny playing with myself in front of him. So I told him dude I've known you longer and better than anyone else, we've taken showers together when we are in a hurry, i'm not embarrassed to play with my balls around you. We started to laugh out loud and he slid over and ran his hand up my shorts leg opening, grabbed my cock and said "then you wont mind if i do this?" He started jerking me off. I just froze and was looking straight at his face as he did it. He looked away from me and pulled my cock out and proceeded to suck on it. He sucked until i came in his mouth and started to laugh. After that day he would randomly just give my blowjobs. We both had girlfriends as we grew up and went to college but he never stopped giving me random head. After college we went our separate ways and haven't spoken much since.