I have been with my partner for around 15 months, we do not live together and have no children together so it would be easy for us to break up. We have nothing in common, he's childish, boring, bossy, miserable and all he cares about is cars. We want totally different things out of life.
We're going nowhere but I dont want to break it off because I dont want to be alone, I keep thinking of stuff we have planned for summer that wont be able to go ahead without him, I dont want to spend christmas alone with the kids either and I have no real friends so without him I'm going to have no social life whatsoever. 
What should I do?