I am going to pretend like I am someone else so I can talk to my son online.
Does he want to talk to you often?
No, recently we've become pretty distant, and I feel like the only way I can connect with him is online.
It is okay to want to talk to your son but you shouldn't be sneaky about it. He will feel betrayed and won't trust you.
I'm going to do what I want to do.
You are better off just talking to your son as yourself. This way your son knows who he is talking to and he does not feel like he is unable to trust you down the line.