WHat should I do ??

One, you have the right to hate him because of the things he called you. However, did oyu ever speak to him about why he said it? Maybe he said it just because he wanted to fell a sense of superiority as they say. Also, no you are not wrong for wanting to talk to someone else in your school. If you avoid your ex, then you shouldnt have any problems arise and as far as the rumors, personally who cares? As long as you happy, isn't that all that should matter? And for getting to know the other guy, yes you should talk to him. If you don't, how will there be any chemistry between you two if you wanted to start dating. They would mostly likely say that you don't know anything about them and reject you. So yes, you should get to know him.

Well if they start just let them run if they don't affect you and people see that they eventually die down and to begin with any good hearted person would know better then to mock some one for things like that. as for your Ex he deserved it you totally made the right choice on dumping him. he sounds like quite the prick. talk to the new guy but don't strike up a relationship with him just yet try to be friends first. then go up from there. Also I see this a lot try not to get to stcky and attention needy and hinge your life on relationships. don't want to upset you but with the information I have that's my best advice. Good question

No, you aren't. Even if those are your only reasons for breaking up wit him, you still weren't happy with him. If you're happy, the people in your life that matter will be happy for you in return. Get to know the other guy- there's no harm in that. Just try to be sensitive to the social situation you're in- as in, don't make out with the new guy in front of bigmouths or his friends until you have a better idea about this new man.

You can't not talk to anyone because of your ex. Just do it be up front with the new guy about things ending bad and so if he where to hear anything he wouldn't be caught of guard.