I love him and can't live without him, I want to die. He loves me but he is very stubborn .last few months some misunderstanding create differences in our relationship. I can't leave without him, sometimes I think I commit suicide .but I know its wrong decision . So please help me

Many of us (if not most of us) can't live without the person who leaves us and we want to die.
Most of us don't kill ourselves, and somehow we eventually 'live' again.
Really, only time and keeping busy are the two cures. Friends and family. Tell them not to try to cheer you up, just take you with them wherever they go and prop you up in a corner.
If you want, write more about it here.
In just those few words you wrote, you do concern me about how you view relationships. You can't have people, for starters. Wanting him back isn't possible if he doesn't want you back. And stubborn? How so? Maybe you are equally stubborn. Tell us.

Of course you can live without him, and in fact, if he does not love you, at some point you have to respect yourself enough to know when to say it is over.

Breaking up is hard, it hurts, but you sound very young ?

I know may be I'm stubborn .but please help me my life is totally spoil ,in the start of day my mind only think of 1 thing, and every time and every sec I'm crying. My mother is also upset for my this type of brhaviour. In the past time I'm very talkative and jolly nature but now the time my life is dead

"can't live without him" - Yes you can.

"sometimes i think i commit suicide" - With statements like those you are basically saying that you are not ready to have a serious relationship. So you should stay out of them. Just think if everyone that got dumped committed suicide there would be a lot fewer people in the world. Why would you allow someone else to control how you feel?

How old are you? Is this your first serious relationship, and how long did it last?

Also - please tell us about the 'misunderstandings.' Talking (writing, in this case) will help.

You'd be surprised the things and 'loves' you can and will get over