i don’t know what to do

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hello, i’m a 19 year old male and my girlfriend has dysthimia, she recently just told me after 2 years being together, saying she has had it since 15 years old (she is 18 now). i have had the happiest times of my life with her and i genuinely love her. she’s sweet and calm and has never even argued or gotten mad at me over anything. i feel confused and frustrated with her because we can never be intimate. in our two years we’ve only laid once. mind i’ve been with her since i was 16 so i have had a lot of desire and need for sexual intimacy, but she never ever wants to do it. she says she cares and that she wants to but she always rejects my advancements which makes me super frustrated because i want her more than anything. i don’t want any other girl, i want her but she’s never available or in the mood for it. i understand her conditions and the way she feels but what about what i want. i am tired of yearning to be intimate with her. she says she doesn’t think it’ll change anytime soon. i get that but i really love her and ive just been feeling frustrated and sad over everything. what should i do? there’s genuinely no getting around it and i have been resenting her for being so distant and detached from me. i really need to talk to someone that understands or just to hear something from person that relates. i really don’t know what to do, i feel like im just wasting my time and in the end ill just end up hating her for it even though i just love her