[EddySchauHai]

My wife's a postdoc and I'm a software engineer with around 8 years experience, so I make roughly 3x not including stocks etc. Our money goes into the same joint account and we split everything evenly (although I must admit to being more likely to impulse spend and go over my budget). I have no issue sharing this because in marriage you're equal, so I don't really think about it in that way. She also had more savings than me when we got married, so there's some equality gained there.

Just have a budget and try stick to it. Have a pot for your own entertainment and for her own entertainment, and then for joint entertainment. It's great she's on more money than you because you're playing for the same team. If there is some sort of "It's my money, I earned it" then have different personal budgets I guess, weighted on income amounts. But everything else should be equal imo (house, bills, holiday fund, etc).