I'm not a truecel because I once had sex with a very average looking girl when I was 19 - does that mean girls actually find me attractive?

I was chatting to a girl I had a crush on for a year and she was being ever so nice to me. I asked her if she fancied a coffee and she said yes. I told her it was a date and we had sex after going out. We had sex for two months and she broke it off. I got my heart broken :((. When ever I ask a girl out now I get rejected, is it because they can see I'm a skel?