I've been with my boyfriend [will call him cheater] for 12 years and for the last 3 years he keeps going over to this same girls house and I know there together and then he lies about being around her I try to kick him out then he wreaks my stuff so I won't kick him out but he keeps doing this and he says I'm crazy that he's not lying WHAT can I do?

The cheater keeping cheating because you keep taking him back. He knows you will cave.

What can you do? Stop enabling him. Send him packing and get on with your life. Without him.