I agree her not "interested" in you is mean. I don't know your relationship at all but in my own my boyfriend said that since I've gained weight he's not as attracted to me and I was totally offended but after discussing it later he only said it to be hurtful because I had said something that hurt him. I am in individual therapy to work out my own sex issues but my boyfriend and I are also in couples therapy to help us communicate better and it has been amazing. My other problem is that i have no sex drive which makes initiating sex more of a chore than a connection. I have been drinking damiana tea for a few weeks as a last resort and I believe its starting to work. (I am having frequent/almost nightly sex dreams) so subconciously something is working.

I wish the best for you and your partner!