I hope you don't mind me painting a broader social picture.
Generally men have out-earned women, quite greatly so. However, there's been a lot of research on the wage gap lately and there have been some fascinating insights.
Both single and married women earn significantly less than married men.
Single men earn significantly less than married men.
Married women have the least earning potential of all groups.
Why are these number important - and why should they be important to you?
Because of the meaning behind them. It means that men don't automatically earn more than women just because they happen to be male. It means that men who are married get to benefit from having a partner who will take over so many tasks that these men can advance in their careers without anything holding them back. Much more so than unmarried men, who are still having to clean their own appartments, file their taxes, remember their mums birthday, plan their social calendar, etc.
Being male doesn't lift your earning potential. Having someone at home doing unpaid labour for you, does.
In ideal situations, this is not a one way street. Generally speaking in happy household the spouse who provides this free labour gets to benefit from the higher income of her partner, and gets gratitude and recognition and acknowledgement for her sacrifice. In a loving partnership, this could be a win-win. Now, tradiationally these roles have been clearly male-female. That's changing.
What isn't changing however is that women are still doing the vast majority of unpaid labour at home, even when they are the high earner...
and that's why you're uncomfortable
It's not because she earns more than you. It's because you probably have no idea how to get the balance back. You don't know what your role is if you're not the high earner. You don't know how to be valuable in this context. Which isn't odd, men haven't learned to function like this. They have no role models of successful women being carried by nurturing and supporting men.
If you are the low earner, there are so many ways to be valuable. And if you really take on that role, you can find so much satisfaction in knowing that you've helped your partner advance to where she is now.
I've been building my own business for years now, and I've spent a lot of late nights working to do so. Every payment I receive feels like a shared accomplishment though, because the only reason I could do that was because my husband was putting my children to bed, reading them stories and staying with them when they couldn't sleep.