How to feel attractive again

I used to feel very secure in myself and as ridiculous as it sounds I always felt like I was perceived as being fairly attractive by others. It's not uncommon for me to be complemented on my looks by acquaintances, both male and female.

I meet a lot of stereotypical beauty standards. I make a decent effort with clothes, hair, makeup etc. I attend pole dance, contortionism and floorwork classes most days. This keeps me in pretty good shape. To be frank, I also know that I am ridiculously good in bed.

But I don't feel 'sexy' anymore. Being hit on just makes me feel uncomfortable. Getting dressed up just gives me imposter syndrome. I feel uncomfortable in my own skin. I am aware of the fact that men find me attractive but it all just feels so futile and fake. I don't know how to feel good about myself in that way anymore. I know that loss of attraction was not the reason for him cheating and I know it's a vain thing to worry about, and that insecurities aren't logical. I also know that the girls were all pretty normal looking, but I just get this irrational nagging feeling that if I could have looked better or fucked better it wouldn't have happened.