Basically as the title says. The first girl a ever dated keeps sitting in my mind even though we dated for really short period of time (I basically saw her 4 times, and only 2 times were actual dates, in period of two weeks, then we only texted less and less for next 2 weeks until we stopped). The last time I talked to her (texted) was 14 January this year so it's been 4 months. With that girl I didn't do anything even remotely sexual, which could be some reason why she lost interest, looking back, and I really was kind of disappointed with her, I didn't really feel that connection even though I "liked her energy". From this time I had much closer contacts with girls, sexual too, but this first one keeps appearing in my mind, and my brain idealizes her, that she had so good personality for me and she is prettier that every other girl I dated, even that logically I know that both these things are bullshit.

Is this normal that because of she was my first girl I ever dated, and that I was kinda surprised that she was interested (she actually is really pretty, just the thing "so much prettier than all girls I dated from then, I lost my only chance to date girl of that good looks" is bullshit), she will still pop-up in my mind, or finally I can expect it to stop, because seriously, I'm kinda sick of it.

TL;DR - The first girl I ever dated keeps popping in my mind, and my brain idealizes her, even though the "relationship" was short, she wasn't even that good for me in terms of character, and that much prettier than other girls, and we didn't do anything even remotely sexual. Is it normal, did someone have it like that?