confused

My boyfriend brought up that the day he lost his virginity is coming up and we should celebrate... he didn't lose it to me. He said it after we had sex which btw when I came home he was reading his sex stories which I don't care about but it made me feel like he was using that to get hard and I'm self conscious after having our baby because I don't look the same. And then he brings that up?? Mind you, he cheated on me right before I got pregnant and I'm still not over it. But I don't want to be with him anymore and I can't break up with him because we live together and I love him but I don't want to feel like this.