"Train" separately. "Ride" together.

It's tough. DH and I have been back and forth with one of us being stronger over the years. when we started riding, I was significantly faster, for a few years. Now it's him for sure - on flats and hills. I can't keep up.

We're both pretty competitive. It's tough to be unequal and be competitive as we are. So what we do is basically do training rides separately (with training partners) and then "fun" rides together.

You could also do rides where it's a recovery ride for one person and a training ride for the other. I find it hard not to let the competitive spirit get the better of me in this sort of situation, though.