I'm not trying to judge anybody, but this sounds like a really unhealthy situation to me. A relationship shouldn't be run like a rewards program where intimacy gets bought and sold with points. If you're doing things you don't even enjoy just to earn access to affection from your own girlfriend, that's a red flag. Marriage and relationships are supposed to be built on love, respect, and mutual commitment, not transactions. I hope you take a hard look at whether this arrangement is actually making you happy...
Ah, who am I kidding? You better repent if you don't wanna spend eternity in the hottest sauna around, ya hear?