I think that hubby and wife should ride together, but not necessarily train - also set some "ground rules" like do you want him to comment on your technique? cuz he's gonna, and if he isn't a trainer "teacher" he will just say whats on his mind, and you may end up on the defensive and end up arguing (not that i have ANY experience with this, really... hahaha)

So when riding with my husband, i tell him this is a) ride - not teaching or b) please help me, i want to session some things or c) start together, but we're doing intervals, we'll meet up on recovery.

its hard to ride with someone who is fitter/faster/more experienced - because they want to feel they are getting some "workout" too. So its important to agree on what you both want to work on during the ride.