I like Mofimadness' response, hopefully tongue 'n cheek, but if not...
I got into vinyl WHILE married. In fact I am still married, and to the same fine lady! About 5 years into the marriage, knowing before hand that I was very interested in music and hi-fi to a great degree, I asked if she would have a problem with me getting into a new format. Up to that time I was digital only, with a few toe dips into minidisc and downloads. Having walked around our neighbourhood during yard sale season, I passed one gent selling a box of classical vinyl. My wife was with me. He responded: Five. Five? I replied. Do you think that is too much for them? How many do I have here... hmmm, 45? I'd like $5 for them, I think that is fair.
My wife's jaw dropped but she was standing behind myself and I was between he and she. I smirked, looked at her and asked if that was okay? She shook her head yes. I swapped out my son in the stroller I was pushing and put the box of LPs in there. I carried my son home while my wife pushed the vinyl all the way home. She couldn't believe I bought all of that for $5. She was expecting $5 each at least.
That was the beginning of it all. Thankfully she has not taken a fit seeing $50+ for 45 rpm Jazz reissues, but then I rarely go out, rarely drink, etc.
If a prenup isn't in place, engage one's significant other before separation sets in. Music is a great mood maker, and we all know vinyl does it best.
