Back in the early 70's, when I was around 18, had my 1st 3some with my girlfriend and another friend. He was about 3-4 yrs older. and had a nice 8" (?, guess) fat cock. Got to admit, was a bit taken aback as first time "competing" and with a larger cock, at least in my mind.
Being young, and first time doing this, well, was really hot watching him go first in my girlfriend. She sure enjoyed, lol.
After he finished, I went for my 'turn'. Oh my! that feeling!! My first silky seconds, and it was heavenly. Needless to say, I didn't last long at all before I added my cum in her pussy.
Then, I was at a loss. What to do now. I came too fast. I know - eat her pussy.
So, I slid down and went to eating her filled pussy, and I immediately found another life long (as it turned out) passion. Cleaning up and silky seconds - oh my! Two new kinks found in one day!
While I was down there slurping away, he was lying beside, and kissing my girlfriend. I turned my head to the right, and his cock was about 2 inches from my mouth. Just seemed the thing to do, and I couldn't resist, so leaned over, took his cock in my mouth. This wasn't something that had been discussed before, and being the early 70's, his response was to jerk back. Nothing was ever said between us about it, then or afterwards. But, the idea was in my head.