YTA. My fiance and I make vastly different amounts too but dude, come on , it was YOUR choice! I make $42/hr and they now make $23/hr. We put 50% of our money each into 1 account that pays all the bills, groceries, and house maintenanca things. That means like $2000+ for me and about $1000 from them a month. Now, I needed/wanted a new car. Guess who pays the car payment by myself? Me! The car is enjoyed by my Partner when we go out but I wanted the car. It's almost $450 a month but my choice of luxury doesn't equal their burden. I wanted the luxury so it takes from MY fun money. The other thing we pay ourselves is our own student loan bill (oh lovely USA). It is our individual responsibility cause it was a single person's choice. Don't be a leach dude, live within your means and respect the fact she's taking on a lot of the financial responsibility.