I have NCd for this in case I get absolutely slated (yes I know I am a coward).
My partner has a 17yo child, "M", from a previous relationship. He keeps in regular email and phone contact with M, but due to distance doesn't see them that often (1-2 times a year). I have met M a few times at family get-togethers, and they are nice enough for a few hours social chit chat, but outside of that I have zero in common with them, and no interest in being any form of step-mother figure (which my chap knows and fully understands). In any case, (a) M has parents already and (b) is practically an adult anyway!
I guess my question is - is that wrong? Normal? Abnormal?
Not in a nasty way, but I usually don't even think about M from one month to the next unless my partner mentions them. I think he sometimes unthinkingly assumes that because he has a natural interest in M, I will too, but I don't. It isn't deliberate, I just...don't.