Do I run for the hills or also report my boyfriend?

My boyfriend of several years has had a history of lying about his finances to me. Bottom line, after much investigation, I’ve learned he used his elderly mother’s credit cards for restaurants, liquor stores (often), food stores and even a car wash (in the middle of the winter), but not always paid her credit card accounts on time so in addition to a lot of interest, there are late fees. He is her power of attorney and she doesn’t have much money of her own. He is her only child and she is a widow but isn’t this illegal or at least unethical even if she told him he could use the cards?

He was unemployed for several months and I can’t tell if his usage of one of the cards was only during this time or not but I do know that he used her other card to pay his car insurance and even his concierge doctor well before he was unemployed! What is a broke person going to a concierge doctor for anyway??!!!

He had his own credit card debt up to recently but was able to pay it off because of a modest inheritance from a family member. He is employed now as well and tells me he has his finances in order because of me and he wants to live with me now and marry ultimately.

He has also hired someone to negotiate down one of his mother’s cards so she can pay it off and is paying monthly the other card certain amounts to start paying it down.

He was convicted over 10 years ago for check kiting because his business was running low on cash and served his time.

Despite this, it seems like he is always using someone’s else money to feed his lifestyle. Am I next (I am very financially solvent b/c I’ve worked all my life)?

HELP - what do I do???!!!!!