I really don't like one of my step children.
DSC is 9 and just (to me) so unlikeable, is selfish, more so than any of their siblings are or were at that age, immature (for their age) and just generally difficult to be around.
I have withdrawn so much more recently as I just can't bear to be as involved as I was previously. I used to help a lot with childcare, running to and from school etc and I just don't offer anymore because I just don't want to spend all day / extended time with them on my own.
I have a really good relationship with my other DSC who I like a lot, because they are just complete opposites.