The manipulation is really ugly. I'm sorry you're going through this, HK.
But let me tell you this: You are NOT crazy. In fact, you are one of the least crazy people I've ever talked to (granted we're online, but you're so level-headed about all of this pain that it simply has to be true)
You are getting signs from him that he's using, or if he's not, he's acting like an addict. Manipulative, redirecting blame, abusing your kindness, sponging off of you, not taking responsibility for his actions, etc. etc. etc.
You are right to feel suspicious that this relationship is bad news for you.
He has a ways to walk before he will be worthy of your trust.
And the problem is he doesn't even have his hiking shoes on. He's waiting for you with the rickshaw.
Love,
GiveLove