A long time ago - but my first orgasm with a girl.
She was my first real girl (woman) friend. A blossoming teen somehow attracted to a naïve goofy guy. She used to wear these short short jeans, fabulous legs, and had more glorious tits than any other girl in the neighbourhood. We started to hang out and before too long ended up at my house - when my parents were gone - just laying next to each other kissing - kissing - and kissing - but nothing more (because I simply did not know what else to do!).
Seemed like we would go for hours doing nothing more than kissing. Then, one time, we were doing the same when she was laying on top of me - not grinding or doing anything demanding - when I started to feel this growing tingle in my cock. Damn, but it felt so heavenly - but a feeling that I had never felt before. All of a sudden, the contractions came - bam bam bam bam - explosive contractions as I came and came and came - within my shorts and all over myself. And now this big wet spot soaking through my pants.
My first orgasm with a girl - and one that I've never forgotten since - now almost 50 years later. While she doesn't know, that moment remains one of my most precious and one that I have relived many times since. Ahh our firsts - may they always be remembered - and honored for all that they gave.