@Who am i I say tell your mom what happened, and that you don't want him there. that should convince her to un-invite him. If I may provide some advice, (you don't have to listen to me) don't talk to him anymore. If you keep talking he'll probably take advantage of you and try to get back together again. He will be truthful until he doesn't feel like it. He will essentially make your life worse.
someone told me to touch grass.
What is grass?
What is grass?