<human>: Can you provide a brief rundown of the text in within 3 sentences?

Me (27M) and my gf (26f) have been dating for about a year now. We used to have sex somewhat regularly, nowadays its more like once a week. I'm usually the one to initiate, she very rarely asks for it and I've never said no to her but she's rejected me several times. It's always that she's tired or has too much schoolwork to do, which wouldn't bother me too much if she would just not promise one thing and do another. She promises sex quite often earlier in the day only to tell me she's too tired later. I'm tired too, I work full-time but I always make time for her needs. I used to have a very high libido, but now I have no desire.

The thing is its not the lack of sex that disappoints me but her general actions in our relationship. I feel like I'm putting in way more than she does. I pay for everything, I drive everywhere, I always have to think of things to do and places to go. I seem to always be putting in way more effort into seeing/talking to her than she does. It's not like I do these things and expect her to have sex with me. That makes sex feel like an obligation and I would never want that. At this point I'm not even upset. I'm just tired of it all, I feel emotionally empty inside and I stopped caring. I'm tired of being disappointed, I'm tired of trying, I'm tired of being upset, I'm tired of everything. It's not the first time this has happened and I doubt it will be the last. We've discussed the issues in the past and she will make an effort but eventually go back to the way she was before.
<bot>: Tired of girlfriend saying one thing and doing another. Don't feel anything anymore, not sure where to go from here.