I think you're already showing you love him and that you care.... and that you're there to be a part of his support system (which is awesome!!). Really only you know what's best, especially if there's history. The friend who tells me he loves me is my ex, we were together 3 years including the time during which I was diagnosed. We're friends now. Yes, I want love, I think everyone does. But I have to take my time. I think it's really the same for any two people. However I wanted to thank you for taking the time to understand people with bipolar disorder and help him in any way you can.