I know it's difficult to grasp, but the person you are at this young age is not the person you'll be in five years. The truth is, you don't know what you want. You get involved with a guy now and you'll never develop the independence you need to develop to become the person you otherwise will be. You'll simply be someone with "baggage." You need your youth and education to become the person you want to be. In seven years you don't want to be one of those women who say, "Yeah, I was young and stupid...I let my emotions and immaturity get the best of me." Instead of having a decent job, you'll be divorced and be a single mom working a waitress somewhere. Not only are you going to change, he's going to change. He may or may not be a JW, but you'd be betting your future on things beyond the control of either of you.
Seek some counseling. Don't avoid it because you fear what you'll hear. You're at a pivotal part of your life.