Two things. You never said what he is bringing to the party. Career, salary, goals, etc.?
Second is that isn't this just the reverse of old-school roles where those things were what the woman hoped for or expected? What was she supposed to be feeling then? He did everything. She was just there for... sex and kids?
In a way, I think some of our LGBTQ+ friends have figured this out before the rest of us have. You love someone for who they are, what they are, and for how you feel when you're with them.
Traditional gender roles simply don't apply.