I'll keep it brief -
SS(7) has been a growing bad influence on DS(5.5) for about a year now.
He's taught him swear words and tells him he has to swear and fight to be 'cool' and taught him 'gay is disgusting'.
I've found out today that he's been telling DS that Santa isn't real.
I feel like I'm losing control of raising my own child and he's finding out/hearing stuff that is inappropriate for his age!
DP thinks I'm massively overreacting and thinks this is completely normal for siblings and normal thoughts/knowledge for SS's age and I feel vilified for even saying anything, but it's making me feel so unhappy now!
Am I actually overreacting?