Mine was with a chick I'd been seeing for a few weeks. We'd worked our way from holding hands to kissing over that time and then one night we'd had a pretty intense pash session in her bedroom and when that was over I casually asked her, "well... Where do we go from here?"
Lasted all of 5 minutes including foreplay and post sex cuddles but I was pretty stoked afterward. She told me it was her first time as well. We dated for about 5 years after that, during which, I found out that it wasn't her first time and that she was actually quite experienced by the time I'd gotten to her.
She's married to some bloke now and has a couple of kids. Last time I saw her, I almost didn't recognise her. She's roughly double the size she was when we were dating. I know this happens to some Women after kids but goddamn. I mean, I've put on maybe 5-10 kgs since then and I wasn't really a prize pig to begin with in terms of looks but she looks like she could sit down and eat a meal the same size as she actually was 15 years ago, now. Definitely dodged a bullet there.