What do you think of me breaking up with my girlfriend of four months?
Why do you want to break up with her?
Because she is too possessive, she will get pissed of if I don't talk to her for a few days
It's always important to talk to your partner about why you want to break up. You should try and work on your issues with her first before breaking it off completely.
She's too hyper and she fights with me all the time
That's just more reason to explain to her why you are breaking up with her. You should always talk to your loved ones first before doing anything that will end the relationship indefinitely, because things could still work out.