What do you do when the one you were ment to be with doesn't want you anymore? Do you just give up and take it? Try and convince them of what they are missing? Fight back?

I thought I knew the rules of love but I'm so confused. I just want to drive there and cuddle up with him because he is the only person who can make me feel better. But he's the only person making me feel worse. This is so fucked up. I just want him to call and say, psych! I didn't mean any of it. You're the girl for me. But I know that will never come. There is way too much dammage and he's not willing to fix it. He's left me alone to try and pick up the pieces that he broke. I don't know if I'm strong enough for this.