I am dating my girlfriend since past 8 months... she loves me too.. but now we have started arguing a lot... we fight a lot...
Recently I went out of town for a few days.. and when I came back.. she told me tat she likes some one else..
That guy is just ****ing around, she knows that... she is confused whether to stay with me or not?
That guy talks to her sweetly,this is what attracts her to him..
When I broke up with her... she wants to apologize for all that she did... and she wants to get back with me...
What should I do? She tells me that she needs some time to forget him completely.
I'm just broke... dont know what to do?

I think both of you need to give yourselves time to heal. Right now, you are confused and that is not a good state to be in when making a decision.

Not keeping in contact with her for awhile, may help both of you end the confusion and any false hope before it gets worse. The last thing you want to do is start a pattern that keeps repeating.

You need to live your life. Take care of yourself. She needs to do the same. If, after the hurt is gone, you choose to try again, then work through the issues that caused the problems that led to her straying before you get back together.

U got to suck it up

You both need plenty of time to let the emotional dust settle, and to decide if this is worth it without all the confusion that's going on.

Only then can you seek a better approach to solve issues, if indeed you are both willing. I can tell you, that breaking up because of anger and frustration instead of talking things out, is not a good sign of being a mature committed couple.