The devil inside me

I just had a tragedy. The girl I loved sad “Yes” to some other guy. She looks very happy nowadays. May be she wasn’t meant for me. So my question is, “Should I be happy for her?” ‘coz isn’t love all about sacrifice and letting the one you love, live a happy life….at least that’s what everyone thinks. But, shouldn’t I be sad for myself? Shouldn’t I care for myself when there is no one to care for me? Why should I think of her when she didn’t even shed few tears for me? Why shouldn’t I fight back for my love? I ain’t a coward and I still have a year left to complete my studies. After that, I’ll rethink.