Having issues and need professional help I think?

I feel horrible, I'm thinking of breaking it off with my bf of 1 year and a couple of months, when I first met him I guess you could say I lead him on, but I was just trying him out to see if it was right, well he can't kiss, he can't really do anything for me, nothing about him is a turn on or even a little spark of love. I know I sound mean but.. I just want to date more guys I've only dated 3 guys I'm 18 and well it's just cuz I was sheltered and never went anywhere to meet anyone. I told him this and everytime I talk about dating other people 1 day, he flips out and cries and screams at me. I don't know what to do, the stress is overtaking my whole life to where my hair is falling out. What should I do? What I really want is just what me and my ex did. I want to break it off just until I get my fill of other guys and if none of them are right go back too him, but I want him to be there for me. He's 24 and wants to settle down right now and get married move in together, have kids. And I'm not ready for that right now. If not breaking up with him, then at least find us some professional help. Plus we do nothing but fight and argue mainly over our relationship, he says that I am the best he can get, and he's right I am. No other girl will give him the time of day. What should I do? I am sick to my stomach over this.