Should I pay off my fiancé’s credit-card debt and subsidize our vacations?

Dear Quentin,

I’m getting married later this year. I make about $150,000 a year, and I have no debt. He makes $90,000 a year. So I obviously have more disposable income. I want to travel and buy nice things for the house (we live in his house and have mine rented). He wants to travel, too, but often he doesn’t have enough savings for that. 

I…