Different people with different ways of handling love

How do people normally handle love? From what i've seen so far, there is some people take it lightly and some of them no. What would you do when you lost in a love? Gone crazy ? doing stupid things and make other people worried or upsad? Although this seems to be crazy but there is really people doing it. I feel that those people are so selfish and childish. Recently i just heard some stories from my friend and it was just so sad. The guy treated her like rubbish at first but when she wants to break-up with him, he acted wild and crazy...saying all those sweet words which he doesn't do normally. Pls don't pretend and act...this is just too much !! Why can't he just let go since he doesn't appreciate this relationship? Anyhow, i just can wish her all the best and try to be more happy. Nothing much you can do now as the guy is now so crazy. There will be a better day ahead...
and also....today is your birthday....so cheer up ! Happy Birthday ...