Thanks both! Yes, my wife and I are closer, if anything, than ever. We've been making a special effort to use that energy on each other (and indeed some of the great date ideas!); having amazing sex and are as cuddly and lovey as always (we're a very affectionate pair). It's really good. The only negative effect is that I want to talk about what's going on in my head all the time, but she doesn't mind - if anything she says it's all opened me up to talking about my feelings in a way I've need been comfortable doing before, and she likes it.
This is why I think it's just something I need to sort out for myself.