<human>: We've been dating for 3 years, most of it LDR.  She has so many great qualities, and we haven't been fighting more than what I'd consider normal.  I just have slowly come to realize that our personalities, senses of humor, are very different.  She likes ABC, and I enjoy XYZ.  Most of what I find funny, she does not.  I definitely love her, however I feel as though I'm not "in love" with her.  I don't want to hurt her, and am afraid of what its like without her.  Does this hit home to anybody?  Can anybody offer any advice?  I don't want to do this and regret it years later, she is a good girl, I am just questioning if she is good for me, and if I am good for her.

Can you give me a shortened version of the text?
<bot>: has anybody broken up with somebody for what seemed like no plausible reason (no fight, etc) just because?  Please read for more context.