<human>: I've been in a relationship for about 2.5 years now with a girl who is more than an hour away from me. We met at college and when we graduated we stayed together. She lived pretty close to campus in her own apartment and I lived in an apartment where I work which is more than an hour away from her. I realized a few weeks ago that I didn't have feelings anymore for her mostly because we only get to see each other on the weekends. I'm always the one driving to her place. She is a great person but there isn't anything in the relationship anymore. We used to go out and have fun with friends but now she doesn't want to do anything. Her negativity is bringing my self esteem down which is a huge turn off.

 I've asked her if there was something wrong in her life and she said she felt like "nothing in her life ever goes her way." She didn't give me a straight answer when I asked her to clarify but also told me that "I could be doing more for us." I have drove an hour to her place for the past year, I do the gentleman things (pay for dinner, movies, I even have bought her groceries when she didn't have the money) I tell her I care about her and always ask if there is something I can do to make  her feel better. I buy her flowers randomly every month. Then she tells me I need to be doing more? 

I felt I was very affectionate toward her and supportive. But now I'm starting to question if I bought her material items to make me feel better about not having feelings for her anymore. Maybe I am part of the problem. How can I end this relationship?

Could you distill the essence of the text into 1-3 sentences?
<bot>: No feeling for girlfriend I see once a week. Both of us are emotional wrecks. How do I go about ending this?