I’m very new to being a step parent, me and my girlfriend have been together for 10months, SS is nearly 4, we have just recently moved in together. My girlfriend is very supportive and gives great advice and is always very understanding and we always talk about my involvement with SS. I have a great relationship with SS, I spend time with him, we have fun, I mess about and play with him However I’m finding it hard to discipline him when he is misbehaving. My girlfriend tells me when I’m alone with SS that I should discipline him so that he knows when he is doing wrong.