Honestly I feel like you’re just trying to get your girlfriend to like math the same way you do when she clearly does not like math as much as you do. Instead you should’ve tried to focus on stuff you both like and also try to get to know what stuff she’s super into. She’s also right about you looking down on her. Have you noticed that in this whole post you only pointed out negative things about her? It honestly sounds like you like math more than her. At this point I think you should use this time to ask yourself if you like your girlfriend enough to respect that she does not like math and not constantly bring it up while being together. You can always make friends that love math and geek out with them but it’s unfair and selfish to force her to like it and expect her to just because she’s your girlfriend.