Now that's what I call a great love story. One can't help wondering, how might it have turned out if the times had given you the freedom to assert your interest when you felt it, instead of waiting 20 years for him to come around?
Anyway, I agree completely. First, about how we must rethink the role of men in modern mating games. And second, that the friendship is the rock on which the structure must be built.
A great marriage, as I see it, is a series of monogamous affairs with the same partner, and the friendship is what keeps it going from one romantic moment to the next. It sounds like that's what you're enjoying. I congratulate you both.