My ex left me for a girl that has a baby that not even his he said we well never get together he called me to check on me it so hard I can't stop thing of him or how him and his new girl doing what do I do please help.

You go no contact and move on, why beg for someone who has completely left you. Have some self respect for yourself.

You be glad he is gone. He left you for another girl. That is not a nice guy to want to cling to.