I can do for her any thing because I love her even I can give my life for her but she doesent like me because m not handsome as she beautiful . She doesent think without her I will die I can't live .

Your question is a little messy,and not too much info there,which isn't necessarily bad,but let me give this a try.

First,who told you you're not handsome?Who told her she's pretty?Beauty is such a subjective thing.Maybe you think she's the most beautiful girl on earth because you love her,but once the loving is gone,she'll go from being a total princess to just another good looking girl,and there are so many good looking girls in this world who could be your princess.

If you're the one telling yourself you aren't handsome,then you need to stop,and work on yourself esteem issues now.However,if she's the done making you feel unpretty,you can just the door on her face and stop reading now,because someone who loves you doesn't make you feel like you're not atractive.

Second.How do you know she loves someone?Has she told you this?How long have you been together?These are all important questions.If it's a solid relationship and it's been a while since you got together then give her time and space to sort out her life.If this is something recent,it's not even worth pursuing.

Last,but not least.You're not going to die without her.Maybe you think you're going to die,but you wouldn't believe me how many people think they can't live without someone they love,and then they just keep on living and finding out there's life beyond love and failed relationships.In life there'll be some many situations where you think you're going to die,for whatever reasons,but then you just find out you're still breathing and life goes on.

And,to end on a different note.. they say beauty is in the eye of the beholder.This meaning that,if someone doesn't think you're atractive,there must be something wrong with their eyes.

You don't say how old you are, or how old your girlfriend is. And why are you calling her your girlfriend- has there been an actual relationship, and have you recently broken up with her?

More information would be helpful.