My husband, son (getting re-diagnosed) and I all have bipolar. It took years to get diagnosed and properly medicated. If we would only stick to our meds. We've learned with time and therapy when we're overstepping our boundaries of being supportive and being enabling/controlling. If you have a problem get diagnosed and treated. I don't know if it's harder being that both of us are bipolar. We're more understanding. We argue less. If one of us are picking fights the other calls them out on it. The best combination that we have found is each of us have our own therapist. Where they can talk to each other and a psychiatrist.