The #1 cause of divorce is money, so it is incredibly important that we are all on the same page with our significant others. My wife and I are 100% on the same page with money, and have been for a long, long time. We have been paying down debt since 2007. No vacations, no going out to dinner, no cellphones, no birthday/Christmas/other gifts for each other-- nothing. We are just about done with everything but the house, and that payment is lower than some car payments.
It is important, though, to set aside some no-questions-asked spending money for each partner each month, kind of like an allowance, even as you get out of debt. We do about $25/month each, but we both spend much less. She doesn't spend any, while I have to buy strings and things. That really helps with GAS, though. Want that cool $200 toy? 8 month wait, man.
My wife is so cool about gear, though. She knows that if I am pitching her on something I want, I will eventually get it. I am so thrifty that she knows I wouldn't even consider buying something unless it is either 1. severely discounted, 2. rare, or 3. impossible to make myself. That has lent a ton of credibility to my gear requests.
She's played bass for about 14 months now, and she's starting to get GAS. It's kind of... ermm...
Girl GAS®. She wants a new bass and a battery-powered amp, but she also wants musical decorations. She wants framed chord and scale charts hanging in our living room, and she wants a big mounted display of old tube boxes for decorative purposes only.
Mike