I have known my best friend for 3 years. we got very close immediately after meeting, and spend a lot of time around each other, but stuff never got romantic/sexual at first. a few months ago, we were hanging out at his place watching movies on the sofa like we normally do, we'd both had a couple of beers but nothing crazy. It was cold so we were under a blanket and pretty close to each other but again this wasn't unusual.

After a while i was kind of leaning on him and my hand dropped close to his lap, and i realised he was semi hard (he was wearing loose pyjama pants and no boxers so it was kind of obvious). He sort of froze a little when i brushed it by accident, and then i don't know what came over me but i touched it properly and he moaned. I started jerking him off, and after a couple.of minutes put my head under the blanket and started using my mouth until he came in my throat. We didn't speak or even make eye contact during the whole thing.

Immediately following this first time we didn't acknowledge it, and kind of just went back to normal. However the next time i saw him a few days later, we were sitting as normal and he moved my hand to his crotch, i got the hint and this time ended up on my knees in front of him on the sofa until he came. This has happened now regularly almost every time we are alone, and he has gotten bolder with it and started basically holding me by the back of my head and using my throat like a fleshlight until he cums.

Sometimes he sits and has a beer or cigarette in his hand while his other is moving my head. Sometimes he holds his phone and watches porn on it while i blow him. This has only ever happened in either his house or mine except on one occasion when we were both at a party and were left alone in a spare room, this time he just grabbed my by my hair suddenly and pushed me onto my knees before undoing his pants and dragging my mouth onto his dick and fucking my face until he came, then we went back to the main room of the party without a word said and went back to socialising and chatting as normal.

We never talk about it, we never look at each other while doing anything. He has never attempted to reciprocate and also has not attempted to take things further and have sex with me. At this point he is basically using my throat as a toy to jerk off with. and i love it. None of our friends know, we act completely normal with each other outside of when this happens, we just ignore it and pretend it doesn't happen every time we are alone.