Cheater

I just found out that my boyfriend well now ex is cheating on me, I've known it for a while but he just admitted it last night and then I left but I've love him with all my heart and its really hurts, he doesn't even do anything to win me back, I know that I'm better off without him but I don't know if I can handle the pain because he's my first really serious relationship I've ever had and I've been putting 10000% into this relationship and its really hurt. I can't talk to my friends about it because we are literally thousands miles away from each other and I was putting good words on him because he's the love of my life and we were so good on each other but that wasn't enough😥 I don't know where else I could spit all this feeling out so I thought maybe I'll share it here and trying to feel better about myself. I texted him and he doesn't reply to my message for 45mins and still counting, maybe he has already been with another girl and that thought really hurts. What do I need to do so I can feel a little bit better? I'm not ready to let go even he did cheated on me but he did let me go without a second thought like I mean nothing🙃🙃