My H put in a MASSIVE skating rink last winter, and he skated with the kids most of the season. He took really good care of it for a bit, and then quit it.
I did try and show him the pictures of him and the kids skating, and he gave it a millisecond glance.
He's had happy times in our marriage too and throughout his life. I honestly never clued in that he might be depressed, until after the BD. NEVER. I just thought he was moody and childish!
I can say that his highs and severe lows got closer together near the end. If he was heading on the road for the work trip, he was happy... and I'd started to tease him about it and asked him if he "hated" me.
During the BD apart from telling me how I'd failed as a wife, he told me he just wanted to work and travel.... he forgot to mention the girlfriend, which he's now added to the mix. Since the divorce, he has ramped up the travel and GF time and is only wedging the kids in here and there. Oh, and he's decided to move permanently to the neighbor city which means he won't be able to help me out much with daycare/school commuting. My point is, I think his depression ramped up with the divorce... don't think he saw that one coming.
He says what he doesn't mean and what he means he does not say.