My boyfriend has just finished with me for the twentieth time, I have been with him for two years and throughout the first he was with another girl and claimed he loved us both, he then asked an ex for a sexual relationship, my problem is I love my man and he is my world, I would do anything for him which I haven't done for anyone in the past, I fell so low, I have no self esteem and am really confused as to whether just to let it go or beg him back again, he says it is my fault we are over as I still haven't got over what he's done on me, can anyone help me out?? At the end of my tether with all of this.

This is the censored version:run!he cheats he dumps you when it suits him;he makes you feel horrible about yourself-you deserve to be happy-run.

The only thing you seem to be guilty of is letting him think its OK to walk all over you and treat you like trash. Ever heard the saying fool me once, shame on you. Fool me twice, shame on me?
You deserve better than him. He dumped you? Good. Saves you the breath it would have taken for you to dump him. Move on. Find someone better. Enjoy being single for a while. Forget doing anything for him anymore. Do something for yourself. Get away from him. He's no good.

He has you under his thumb, he cheats, breaks up with you and makes you feel like it's your fault. Come on, you're smarter than this! Get out now

Cheaters should be blacklisted for you by now. How can you still trust him?

no trust = no relationship

He knows he can do anything and you will come back to him.

No one deserves to be treated like he's treating you but he will continue and your life will continue to be miserable until you stop allowing it.

The other posters have said it well, so start running.

So he is your man but he goes cheating when he feels like it and you accept it.

Let go of the tunnel vision. You are molding him into who you want him to be and then he goes using his free will to cheat on you rather than making you HIS woman.

All too one sided to me.