It's polyamorous, but it's an honest mistake.
Honey, you might not want to talk to your parents, but you need to get out of there or get the other two out. $22,000, not a single call for a job interview, AND you have to support someone who's not your boyfriend and insists on screwing another woman AND you (who he dumped and still hasn't made up with). Are you paying her bills too? You are being used and not even being treated remotely nicely. Kick him to the curb! He won't even pretend to listen to you or help you. He doesn't deserve you! This isn't poly; it's crazy. Rescue yourself. Get them off your payroll and look for a man that loves you, respects you, and helps you instead of eating you alive. You may need your parents help to get rid of that parasite, but please don't be ashamed to ask. You were tricked, he's the bad guy, get him out. Good luck!
Me - Mostly mono female, 39 yrs old, married to Leo.
Leo - Poly bi-sexual male, 37 years old. Married to me and looking.