Rats and Dogs: compatibility, luck together, future.

My husband is a rat 1972 and I am a dog 1983. We have had a relationship full of ups and downs. Together since 2006, married since 2010, separated in homes since July 2013. Up to now we still actively see each other 2x a week. Should I expect that it will get better for us or let it go? We seem to have a lot in common, compatible in many ways. But the commitment issues are abundant. Am I better off cutting him loose? I really want to be in a committed, healthy relationship where I can build a family and have children. Pls. advise.