During my three significative relationships there where periods when my partners made or had more money then me.
The first one, on some artistic events and at the final accomplishment of long term professional projects. So while not a permanent income, yes big money when happened.
The second one and as my also bussines parter made as much as me. But she also received periodical important payments for selling a bussiness inherited from her father.
My third one had a significative income from the practice of her profession. Less than mine but ..... she also took care of the bussiness / financial side of my own professional activity as I´m better in developing it´s "technical" core. So I can say she stongly contibuted to my income.
That said and while I make / made enough for my and my family needs, I never had prejudices about my partners having high and sometimes higher incomes.