And I'm fed up! DS is 13 months and DD has just turned 3.
I do feel sorry for DD as she can't play with anything without DS destroying everything.
They are too young to play in different rooms to me but I need I literally can't cope with the fighting and arguing every 2 minutes. DD has started hitting DS when he starts messing up her toys. If she starts playing with something else, he just follows her.
I've tried playing with him but he's not interested in me just DD. I don't ever play with DD as I'm always trying to separate them.
I've tried buying 2x favourite toys but they both just want the same one even though they are exactly the same! 
I don't know what to do. Please help because I feel like I'm going to scream. 