<human>: Give me the gist of the text in a nutshell

I have known her since high school and we are in college now. We started dating last year In May because we hung out so often that we developed feelings for each other. It has been 10 months and sadly I just don't think I feel the same way I did before after all this time. She is my best friend and she comes from a rather broken home; her mom is clinically depressed and her father has anger management issues and sometimes verbally abuses her (never physically). She doesn't have a whole lot of friends and I'm probably the main person in her life who is there to support her. These last few months we have argued several times and she has noticed that I am losing interest, fast. Every time the subject arises she sends me about 100 texts saying how sad this makes her and how depressed she would be if we broke up, but I feel there is no point in going out anymore. She's the sweetest person to me and I love her so much as a friend but that feeling just isn't there anymore and it's unfair to her and I that I can't truly return her affections... I feel so guilty about it because I know what it feels like to be in love with someone who doesn't feel the same, and I just don't know how to break it to her...some encouragement and advice would be greatly appreciated.
<bot>: I am dating my best friend but after 10 months I don't feel romantically inclined enough to stay together and need a way to tell her. And also some encouragement because I feel horribly guilty.