Am I being too picky or should I run???

I'm in love with my bf and vice versa for several years. He wants to live with me now. He's had financial issues in the past but seems to have recovered - or so he says. But we got into a big argument the other night - I thought he had used to pay some bills his tax refund (which by the way is erroneous and is much much more than it should be, so his CPA told him to put the $ into savings in case the IRS asks for it back); I'm still not sure if it was the tax refund he used but he exploded and said I wrongly accused him and it actually was $ from a security deposit belonging to his mother when she moved from assisted living recently - she's on Medicaid so I get she can't "own" it ($2,000), but why would he just use it as his? I told him even if that's true he'll need $ for her for extra expenses - first he said "its mine anyway" (he is the only heir) and then he said he's replacing the $ when he gets his pay check this week. What's weird is that the bill he paid for himself wasn't even due yet! He further said I should have apologized for accusing him...give me a break! Now I've learned that despite him paying that bill, he stills owes a fair amount on credit cards but based on his monthly income he should be able to pay it but who knows? My bottom line is do I really want to share a household with someone like this or is it not a big deal? He also mentioned to me a few months ago that he was "running short" in terms of his account and when I told him that freaked me out b/c I didn't want him living with me if he was going to tell me that, he said he meant that he paid all of his bills and he said it to "make me feel better" - really??? Do I give up after hanging in there with him all these years? We have a great time together but I must admit, sometimes what he does really upsets me and gives me the creeps.

Just replied to a very similar problem.