Extremely insecure

Hi ladies.. I finally got myself out of my horrible relationship. I constantly had girl(s) coming to me making me feel dumb because of my “bf”. Girls he was talking to while in a relationship and now I look at them and automatically want to go into a ball and cry. I’ve never felt this insecure, I always thought every women was beautiful and was happy for their beauty. Now the girls he basically “played” me with, I look at them and I think to myself “I’ll never be like them” the fact that he made me look dumb makes me feel like I’m not as beautiful as them.

I recently started going to the gym, it’s been 3 months since our break up. Does this ever go away..?

Edit- we were planning our wedding* when girls starting pulling receipts, so I had no choice but to finally believe the “rumors” and left.

(Before I would hear about things but no receipts)

....

Anyways, now I can’t even look at those beautiful ladies because I feel worthless, why wasn’t I enough..

Edit 2: I had girls send me screenshot and when I confronted him and asked to see his phone he actually broke it, because he couldn’t “believe me” and got so mad from this.