<human>: My best friend told me the other day that me and her cant be friends anymore because of how close we have gotten but cant be together due to personal reasons. Its kind of hard to explain in full detail but for my part I've gotten too attached to her this past year and I find I care too much about her. I realize that I care too much and have tried letting it go but cant. But now that she has said we have to stop being friends I don't know how to let it go and move on without being bitter about it. Any suggestions?

Can you summarize the given text in a few sentences?
<bot>: My best-friend said we cant be friends anymore due to how close we've become. I realize I've grown too attached and don't know how to move on.