STBXH and I do not share biological kids... but I love my stepkids... it's nice to know they think of me as well. And this is the reason I do not block him. If he ever reached out due to a family emergency and I was being immature and blocked him I would never forgive myself.
I accept the lot I've chosen by my actions but not my heart that I'm friendzoned. It is what it is.
It's hard raising kids that aren't yours for for many reasons... firstly you're not their parent and it's easy for them to hate you because you're not their parent. I had broad shoulders and I carried that anger. I preferred they didnt like me if it meant they didnt blame their dad.
It's nice to know that my sacrifices were not unnoticed.