Idk if I should be mad at myself, him, or her....

So I found out a while ago that the man I lost my virginity to has been making plans to take a stripper out on a date and he hasn't spent any money on me whatsoever even when we hangout....I'm not going to lie this makes me kinda upset and after I saw pictures of the girl on Facebook I kinda started to hate myself because she has a really nice body and I have body image issues and idk if I should be mad at myself for not being good enough for him in the first place, if I should be mad at her,or if I should be mad at him 💔  Ps sorry for the long post I just need advice as to what I should do