How do women's feeling change so drastically?

[Regan]

Well, a woman can say one thing in the moment and yes, maybe even with the "It's over" the next day, she could still love you... I know if I base it just on myself, I can love a guy, want to do anything for him one day... but after a few hours pass... I start to think... What's best for me? What's gonna make me happy? and at first it's "This guy!" but then you start to think of stuff that's gone wrong, things that might bother you about this person that they may not want to change or haven't changed and then suddenly, although you still love this person, you know it's best if it's over.
It's not that we're crazy women... some just act on impulse and then after realizing and taking everything into consideration, feel that maybe, something else might be better for them.

If you want things to work, maybe you can both agree to cut Facebook out or be on it less... ask her what she might want the two of you to change and be sure to let her know if anything is bothering you too. Compromise if you want things to work out... if she doesn't want to, then she's made her decision.