Excellent link - and very true.....My own experience is a little different, though.
I met my wife at a point when I was a keen photographer and shen wasn't. This was back in 2002. She has a Minolta APS point and shoot. It was okay but no creative control required or available.
I was an avid film user but was dabbling with the dork side.....
Lara was intrigues by the new technology but I wasn't 100% convinced. I eventually bought her the camera she wanted (some credit-card sized Sony point and shoot thing) and all was well.
Then she became interested in getting better results and began coveting my DSLR - which I gave her. Now I'm trying to convice her to give film a go. After all, it's not as if I'm short of a camera or two that she could borrow.
I suppose the moral of the story is that encouraging one's partner to participate in any hobby or passtime will usually bring you closer together.