Faith,
This is really a tough one, let's face it as painful as splitting up may be you may need to do it I mean this for me would be the "last straw"!! I do not mean to get nosey but I hope if you are having sex you are having protected sex. Your guy sounds like he can use some therapy or counseling of some sort, he also needs to "growup". I do not want to tell you to split up but it seems he has no regard for your feelings and that is NOT RIGHT!! I know I would and could not stay with a guy who repeatedly cheats on me. Also DO NOT ever blame yourself if this relationship ends sometimes guys or girls will try to make the other person feel guilty, don't! It may be time to move on with your life, time is too precious to waste. . . I hope things start to get better for you no matter what you decide to do, take care of yourself and keep in touch.
"a hug"
"darkeyes"