Topic: losing it?

I am really scared. Not for my life but for my heart. I have been with my boyfriend for a total of 16 months (we've dated 2 times, this is the third) and I am really starting to get bored with this. I mean, he hasn't done anything wrong. I am just not sure if I can deal with being with someone right now. I am going to be going to college next september and he is planning on coming with. We have gone to school together in High school(have 3 out of 6 classes together plus spare), share our locker and we work together. I have told him that I need space, but I never get enough of it. I feel so great when I have a day at home and I am thankful when I don't have to explain about what I am doing every second to him. I feel like I am walking on eggshells whenever I talk to him because no matter what I say it seems to tranlate into his mind as something bad. We have talked about the future together, kids and all, but I don't think I can do that with him. He is too clingy and I need space. I am only 18 for goodness sake and I want to have fun with the rest of my life. Please help. Anything would be greatly appriciated.
PS I do love him very much, I don't know if I could stand to hurt his feelings then see him the next day.