I need some advise ladies....

I'm looking for advise on how to get past my SO watching porn. I know he's a guy and that's how they're wired (that's why I want to get past the fact), but it still really hurts. I always knew he probably did but ever since he confirmed it it's all I can think about lately. My self esteem hasn't been too high ever since I found out my ex husband was having an affair, so this of course makes me automatically think that I'm not good enough to fulfill my boyfriend's wants and needs. How can I stop thinking the way I do and just move forward and be happy again?