My current husband doesn't like my teenage son, HELP!!!?

You can't make them get along. People at any age have others they are not compatible with. I had a girlfriend one time who's kids I hated, I could not be with her because her and her children are a package deal. To avoid that situation sit them both down and talk to them find out what it is they don't like about each other and see how they can get over it or if they can get by the differences.