Heart broken

So I jus left my bf of two years. We was trying to start a family but I found out he was cheating and its ripping me apart. One of his ex's got my number and sent me a number of text exchanged between them. Safe to say I was devastated. We have been trying to have a baby for months now and to learn something like this is crushing.  I wanted a family with him I wanted to marry him, gave up everything to be with him. Now I have to move upstate with my aunt because I was living with him and safe to say won't be anymore. My whole world is turned upside down. I can't sleep I can't eat. I find myself crying about everything. It's like I had everything I wanted and it was just wiped away by this one girl who clearly knew about me. She had no problem jus ruining everything I worked so hard at. I don't understand girls now a days why go so much outta your way jus to hurt someone else. And the men, why throw everything you love and care about for a piece of ass! (Sorry for my language) I jus so upset I don't know what to do with myself anymore. Can't wait to move on with my life.