labil teenager yang galau

ok I've got the same dilemma like labil teenagers whose mom/dad just got a new relationship partner, just like in the movies

yes I got it my mom needs a date too like me

but she hasn't got home in these past two days

yes I know he's a good man, and I trust him

he's been closed to my mom for like 10 years, since before the divorce

I know "he'll never replace my dad, and I accept him as my mother's partner" thing

but recently when he's around I began to feel.. I dunno.. mad? fed up? annoyed?

I started to think "hey this guy's really nice to me and my brother, but only because he wants our acceptance to this family"

did I do wrong?