Your key is going to be "Differentiation" for both of you. I am not a therapist, so I am not about to give advice to you, but I see one regularly and he has helped my wife and I in an unbelievable way.
Let me recommend a book: "Family Evaluation" by Murray Bowen, Phd. I also recommend a therapist who uses "Family Systems Therapy." There are several good systems of therapy, but I think Family Systems is the best. It has caused a total paradigm shift in my life and shown me how to help all relationships in my life be healthy and fulfilling.
Best Wishes!