But everything went downhill after I found a Meth pipe in the basement we lost our connection

It's almost like.. he's a drug addict. He's irrational, can't even pay rent or be remotely responsible, yells at you for everything and is distrustful, and oh yeah, HE IS CURRENTLY ADDICTED TO METH.

You cannot help him. He can only help himself, and if he still is keeping a meth pipe around, acting irregular and paranoid, and is going off alone places and not telling you.. I'd be suspicious as fuck and not waste another second with him.

Drill this into your brain. METH WILL ALWAYS BE MORE IMPORTANT THAN YOU TO THIS MAN. He's an addict, barely clean a month.