0%. She actually pays for more things in our relationship. Her banking gig pays about 80% more than my non-profit research gig. We split food, utilities, and going out, and pay our own insurance/gas/phone bills. But I'm living rent-free at the condo she owns, as she refuses to let me pay any part of her mortgage.

I'm planning on making her an honest woman very shortly, and then we'll be doing everything out of a joint account. h: