Why are men so controlling …even exes?

I went to pick up my kids from my ex’s mother. She lives in apartments that have a gate that you need a code to get into. When I got there, someone was going in so I just followed that car without calling. She had told me to call her so she could let me in and would meet me at the front entrance. That irritates me because I have a right to know exactly where my kids are and I feel like my ex just doesn’t want me to know where his mother lives so I’m sure he told her to meet me at the front with the kids. He’s controlling like that. Anyway I drive around looking for her car so I’d have an idea which building she lived in and I could see her when she came out of her apartment. Anyway I guess one of the kids recognized my car so I didn’t get the chance to locate her apartment. I was still bothered so I asked her “Don’t you think I have a right to know where my kids are”? She tells me that she “doesn’t want any drama around her house”. I guess you could say I went off on her. She NEVER tries to tell her son to do the right thing and I’m sick of it. Every time I turn around he just has to control everything. I seriously think he must still be in love with me since he tries to control my life so much and I told her so. Being the bitch she is, she says you do know he’s married now right? Of course I know! But that doesn’t change anything. If he was so in love and married, why is he intent on controlling my life?

G.G…..We already have a court order and set days that we have the kids. I don’t get on with his wife so no I won’t be sitting down with her.