Cheating

what are y’alls thoughts on...bf cheating.

Do I stay or leave him?

I’m a firm believer on fighting for what you love. & I love him but he had sex w his ex & it hurt to hear it but he confessed to me just now. I’m so confused. The scary part is I’m not even hurt rn. I’m confused and don’t know what to do. Idk what to do. I would never do anything like that and I feel less than. I feel like complete shit. I don’t want to give up on him but when am I going to find someone that treats me like I deserve.