There is a 2 1/2 year age gap between my DS and DD. DS has never been affectionate towards his sister. Only occasionaly will he ask to cuddle her (she is 10 months old he is 3 1/2) and only kisses her when he's hurt her which is a daily occurance. Others I talk to their older ones smother the baby in love and never attack them. Is he normal to keep attacking his sister? I am an only child so have no idea how a sibling relationship works and desparatly want them to love each other.