Blind sided

Been in a relationship for almost a year now completely loyal and loving and supportive and everything I thought I should be doing. When I say things in my relationship was absolutely fine we didn't fight we had regular sex we'd go out like. Everything. Was. Fine. Till I found out he cheated on me while I was pregnant and after I had our daughter. It was all online from what I can tell but like. He even lost his job for posting inappropriate pictures on Reddit of himself with his location 🙃🙃 made me delete onlyfans only to be subbing to others OF pages. And to think this started over a profile on FB that I peeped of him liking this girls inappropriate pictures to a whole world of him just posting and sending his junk to everyone. I'm two months post partum and I am absolutely crushed. It came out of nowhere 😞 second time this happened to me. Both dads to each of my children have done this. Why am I never enough ?