You should realize that you're both too young to be in a relationship. Better at your age to be single and spend time with lots of different people.
break up with him?
Dump the bum.
this is what I call writings on the wall. you really have no power to control him. let him go if he wants
Dump him! Those are only the e-mails you saw....what about the ones you didn`t see?
Confront him about it. Tell him how it made you feel and why. Consider leaving him. If he's telling other girls he's single, he's probably not terrible interested in keeping you. You should have better.
Wash your Hair?