What's wrong with me

Why did my H lose interest in me. Why does G constantly search for new women.

Am I just not good enough for any man.

G just chases everything in a skirt, it's so hard to take. He has lost interest in me I can tell. And he will lose interest in the others. He only likes the chase, once I was his, he's gotten bored with me and tosses me aside, or rather puts me on shelf to admire his possession and moves on to the next one.
Why am I not enough for him.
What's wrong with me?

I am so very very sad.
There is no happiness in my life.
G only stays with me because he feels he has to.
My H wants me dead.
I am nothing.
I know that G will just continue hurting me.
His sexual conquests and "the chase" of other women will always take priority over me, he would rather end our relationship than stop chasing women. He's a player. That's who he is and it's hard to accept. And it hurts. That's he's not who he pretended to be in the beginning. I got fooled. And now I'm in love with him and being with him or being without him both are equally painful. I will never be happy. :(.