One Time... I Wished that I Had Pushed For More

Couple of years ago, I moved and my best friend decided to help me moving all the crap from the old apartment to the new apartment... after we finished sometimes around midnight assembling the bed, we decided that is too late for him to drive home and he can sleep over, my girlfriend wasn't there, she was staying at the old apartment to cleanup and then she slept at some friends close by the old place.

He went to take a shower without closing the bathroom door and shower curtain was not installed yet, he asked me for some t-shirt from me and I even gave him a pair of new underwear as it just happen to shop few days before. We talked about sex before and I knew that he is uncut and even same size as me... but I noticed a good girth on his flaccid member... He finished the shower , I went for a quick shower after him and we went to bed as we were exhausted after all day moving and assembling the furniture. About an hour later I woke up with my hand over his super thick cock... I m not sure how I ended there, but he was fully erect and apparently I woke him up, or maybe he was. I apologized and he said it's ok, but.... curiosity killed the cat.... I asked him if I can see it fully erect, I turned on the nightstand light and I dropped down a bit his underwear. It was like 6-6.5" around ... we are same size (7-7.1/4") but his girth is ... way above anything I could imagine. (we we used to talk about girls he said that he usually needs lube and I was wondering why) - he did not said anything, just watched me playing a bit with his cock, but I did not dare to do more and we decided to go back to sleep (what an idiot am I) .... now I regret that I did not offer more to him, I believe this was an "open invitation" from him, but he is shy to try, it took us long time to be comfortable talking with each other. We are still best friends, but we never talk about what happened back then. Somehow, I cannot get that imagine out of my head and I still fantasize about that. I never been with a guy, but for some reason, I would even let him cum in my mouth.... that how bad I am craving for him. No we are planning to have a ski trip together, should I propose to spend the night at a hotel and continue were we left of back then? I have no idea if I can be good enough to give him a good BJ... (considering how thick is his girth) if he accepts me to give him a BJ, will he be my best buddy after? We are both in late 30's now....