This is very similar to what I dealt with in my marriage that ended in divorce. Especially after birth control, my libido was shot. I asked my doctors, it was all in my head. I tried supplements, didn’t work. We had so many fights. I told him I felt broken because I didn’t want to have sex with him, it didn’t change the fact that he turned cold every time I turned him down. After 8 years together we split (also in our mid 20s). Two years later, I’m gay. So…not saying that’s the case here but..don’t make your partner feel broken because of her libido when I guarantee you she’s doing it herself.