DS2 (7) has just told me that his school friend doesn't want to come to our house to play because he is scared of DS1. The only time the friend has seen DS1 was when I was dropping DS2 off at his house and DS1 was launching a vicious attack on DS2 in the car, pulling clumps of his hair out, leaving DS2 distraught and in tears.
It is so hard to invite kids to our house when DS1 is being like that. I feel I have let DS2 down. I feel like crying