AITJ for marrying a rich guy and letting him sleep with other girls?

Ok so (23f) grew up super poor. mom (41f) worked like 2 jobs just to keep us fed me and my sis (19f) had to hustle too from a young age. life sucked and i promised myself i’d do whatever it takes to not be broke forever. Fast forward a few years, I met my husband (33m). hes crazy rich. yeah we had real attraction and love, but ngl his money def played a part in me marrying him. now I live in a nice house, go on fancy trips, and dont worry about money at all. We got two kids: a 3yo girl and a 1yo boy. Theyre my everything and giving them a life I never had is everything to me.

Here’s the thing tho… My husband sleeps with other women. he told me from the start. it stung at first but i’m fine with it now. he says it’s just physical stuff and he always makes me feel like the #1 in his life emotionally and financially. My mom and sis just found out and are pissed. they think he’s taking advantage of me, using his money to control me, and that I’m selling my dignity for cash. mom cried saying she raised me better than that, sis called him a predator exploiting my past.

But honestly? I’m good with it. I made a choice for me and my kids. I’m happy, safe and not being abused. me and my husband have rules that work for us and thats enough.
AITJ?..