If I feel I have outgrown him, what do you suggest I do?

We have been together for over 5 years, married for just over 1. I am 21, he is 23. I feel like I have outgrown him and his immature ways. For years, I have helped him grow and advance in his life. I pushed him to get a good job, get his license, and create goals for himself. I used to be so deep in love with him, and surrounded my life around him. Now I feel like I love him, but not in a romantic way. Right now in my life, I want to concentrate on myself and my goals and what I want. I do not want to be in any type of domestic relationship. I don't want to be cuddled or held by him or anyone. In the past year he has really improved himself. Its very weird how I feel. I used to want to be that "perfect" wife but now I see that it's all not what it appears to be and I want to be free and not have to answer to anyone. Financially he has really but a strain on me for years but I always stuck by his side, even when he just walked off his job without having another one to fall back on. I don't want any man in my life ruining what I have tried so hard to build up, and that's what he has done to me so many times. I have certainly changed, to the point where I no longer feel compatible with him. I just don't know where to go from here. Try to make it work and figure out what is it that I need to do to fall back in love? When he makes mention of our future, I can't help but cringe inside.