Break ups!

My boyfriend well now ex just broke up on Friday! I broke up with him cause of something he did that he promise to never do is flirt &  invite another girl over to his house which meant obviously he was going to cheat on me. 
I'm mad but sad & idk I'm just so confused. He has done his before & I just don't know what to do anymore. I love him so much &  he says he does too "supposibly" idk. Probably the thing holding me back is that I lost my virginity to him. He keeps texting me & tries making me feel bad. He calls me crying & saying he's sorry. But I just want my time alone. How should I tell him so he can understand & stop texting me?? I don't want to get back with him& he might cause it by keeping in touch.