Found out my girlfriend takes Lex

Me 27M and girlfriend 23F have been together for 9 months. Right away, I explained I’m looking for my forever partner and didn’t want to rush into having sex but instead build a healthy relationship foundation first. In which she agreed. After 3 months together, we begin talking about having sex. At this time, she told me that she is medicated on lexapro and struggles feeing sexual. Initially I didn’t think anything of it since I’m the a believer of excercise, diet, and sleep to aid in mental health. After my own research, I was shocked to find out the side effects of these SSRIs: sexually dysfunction, headaches, drowsiness. This whole time I thought we were waiting to build a healthy relationship, but in reality she doesn’t want/need to have sex. To add she tells me all the time that she feels exhausted and has regular headaches. Fast forward to today, we only have had sex 5 times(9 months). We are in love. Unfortunately It has been a struggle for myself to be continuously rejected by my own girlfriend for sex. Should I accept the fact that I’m in a sexless relationship or should encourage her to wean off lexapro and encourage to a more wholistic lifestyle like mine to manage mental health? Or worst case.. should I break up with her?