I asked my wife this question, and she wanted me to ask you what you mean by "love your tank." What is it that you want your wife to love about it? Comment on how it looks? Help with maintenance?
This coming from a wife who bought me my first tank, then immediately regretted it because that's all I would talk about for months on end. She actually insisted on me joining ARC so I would annoy someone else with my obsession.
Fast forward a year and a half, and she just suggested sticking around San Antonio for an extra hour so she could wait until her favorite fish store opened so we could get another skimmer to support the tank upgrade she just suggested I do. While we were there and I was deciding what to do skimmer-wise she picked out an urchin, and a new pistol shrimp so the watchman goby wouldn't be lonely since his shrimp died. She decided against a hippo tang after looking it up on her phone and deciding our tanks weren't big enough to keep it happy and healthy.
She attributes her change of heart to a few things. First, when I joined ARC and could "talk fish" with someone other than her it took the pressure off of her to listen to me babble on and on about water chemistry, filtration, etc. As the newness started to wear off I kept tinkering with the tank, but didn't obsess to the point of neglecting the family. Just when I thought she'd had it with the entire hobby I mentioned wanting to add a clownfish to my already overstocked 12gal tank she replied "No way, it'll spike your nitrates!"
Huh? She'd been listening all this time?
It was backing off, not pressuring her to love my tank, that actually let her start to enjoy it, along with putting things in the tank that she liked. The symbiotic pistol shrimp/watchman goby relationship fascinated her. SPS corals bored her, but colorful zoas, softies, and LPS were huge hits. And then she said the words every married reefer wants to hear: "You need a bigger tank."
And so our family has gone from a single resented 12gal to an interconected 90, 27, and 55gal system (plus multiple planted freshwater tanks), with her being an active part of tank care. I still service the skimmers, do water changes, etc, but she loves feeding the fish, watching to see how they're doing, seeing the interactions between creatures, she even noticed my lawnmower blenny was losing weight and rehabbed him to his former fat self.