<human>: So recently I landed a great job, making close to 40k per year whereas before I was barely clearing 20k....my gf makes around 20k.

The problem now comes that we moved in together we both agreed rent, utilities, and groceries were all going to be 50/50. But since the employment change her mom has put in her head that I should be responsible for more than half because I make more.

My thought process says that she could work full time and do school like me...I feel I work very hard and put up with the stress of basically 2 full time jobs and worked my way up the ladder to be where I am. Her thought is that she has little left over after bills ( maybe 100 disposable per check, paid weekly) and wants more financial  freedom by paying less.

Now an additional point I want to make is that I do let her slide on groceries or bills occasionally just because it's hard to collect from her (I feel like a dick leaving her broke) but when she budgets poorly I don't see that as my fault. In addition to that I never let her go without, if she needs gas, car breaks down....no question I'm there for her, but on principal I want to stick to our original agreement. Am I being a dick?

Summarize the given text in a few sentences.
<bot>: me and gf used to make the same amount of money, I now make more gf thinks I should pay more of our monthly bills as a result, I do not. Am I being a dick?