I'll interpret "losing my virginity" as losing my cherry as a bottom. I'd already been a top, and of course gave BJs, but never been fucked. Tried a few times but it hurt too much before the guy got more than an inch inside me.
Then I happened to blow this guy with a really small dick, and I got an idea: ask him to "deflower" me. He agreed, and also to my requirements to use lots of lube, a condom of course, and to instantly stop if I said stop.
He entered me fairly easily, doggy style, and within seconds I was thrusting back at him as eagerly as he was plowing me. It was really great. Afterwards he said it was impossible that I was a virgin. But it was true, and he fucked me twice more than night in different positions. And on subsequent nights, too.
I definitely remember it, and the name of the guy, though I've since relocated from there. But he wasn't my last.