I've had quite a strange step parent experience.
Met my DH when he had been separated over a year from his ex partner (who left him for someone else) with 2 kids aged 10 and 8.
We dated for a year before telling kids about me. Ex- partner did not take it well and caused havoc. Me and DH married and been together 25 years.
Anyway, ex-partner died from sudden illness when kids were young adults and they inherited large sums that has financially set them up for life.
So here is the rub. I'm the high earner and always paid for everything. For universities for both DSC, for DH to retire early, for weddings and holidays etc.
Today oldest SS (now in late 30s) said to me something about never getting much financial support from us and having to always struggle.
I'm just gobsmacked.