With someone I first met, once. With my wife, plenty as we both wanted kids and we got kids.
I still thinking about the one I fucked and shot my load in her, up until now, if she ever got pregnant from that encountered. It was a casual encounter, which she and her then boyfriend let me fucked her bare. They contacted me from my add in local newspaper and we met up one Friday night at a local bar. I was just out of college, single and horny.
All clicked so we headed back to their place a few doors down from the bar.
The boyfriend was in the room, naked but didn't participated much. He has a very tiny penis, about 3" erect.
She was a good fuck, very tight pussy, it felt so good. She was moaning constantly and kept saying how good it felt when I was fucking her. After about 10 minutes or so, I shot my load in her. Up until that time, I've never thought of that I may impregnating her. It was all for a good time.
The couple called me again a week later, very late around 1AM Friday night. I was so tired from work that week and declined, I asked for another time that would be better for me. I didn't hear back from them.