Recently my girlfriend broke up with me. As reason she mentioned that we are too different, because she likes partying while I prefer to stay at home. Also she told that I'm too introvert, so I don't talk too much about my feelings. At first I have to say that I have been working really hard for last 3 months, so I'm so tired that I really don't want to go anywhere, but it is not like I hate to party. Also, we are still living together, she moved to another room. What should I do to get her back? I don't talk to her much and I also try to give her more space. But I also want to know her that I still love her. Last night was really cold, so I brought her another blanket. I care for her, and I'm afraid of losing her.

If you really care about her that much then I think that you should talk to her and take in everything she is trying to say. Tell her that you will change as much as you can so that you guys can still be together. Besides, I think that she is afraid of losing you too. If she broke up with you shouldn't she move out? I think that all she is waiting for here is a long talk about how much you love her and how you will change to be with her again.

Actually she has already dumped me once for another guy. Her ex. And after a month she came back to me begging. So... I think, probably, I should just kick her out, well a good friend of her told me she is f**king another guy.
I love her, but I hate these changes once in a six months, when she starts to party around and goes after other people.
I'm just messed up.

I feel for you but sorry, working hard and being tired is NO EXCUSE for not making time to share and care with your partner. Give her a few days then sit down and ask her what can be done to make things better. If she is adamant about this break then she gets a 30 day notice, and gets gone, sooner if you don't trust her.

Sometimes it just doesn't work, but bad behavior is not unacceptable for any reason. You both sound incompatible, and that's okay. I suspect when the dust settles you will have a clear head to make decisions for yourself.

So, how many months have passed? I feel great not having her in my life anymore. She came back crying and begging. :D So, an advice, if you give another try to any person and he/she breaks it, never give a third.