Controlling Partner

Sophia • 27 year old mother of a 6 year old TTC#2 happily in love for 10years. 💏👪
So. I have been with my partner now for 10 years since I was 17 years old. We now have a 6 year old together. There has been suspicions of cheating on both side early on in the relationship but nothing recent. He feels as if he needs to control and monitor my friends and sometimes my life. If we are not doing things as a family the only outings we go on are with HIS friends. He's always got to know who I am texting or who I am taking to and it drives me crazy. I can barley go to the bathroom alone and if I dare bring my phone it's the end of the world. Well next month I am thinking about taking a trip with all my girl friends to Vegas....
Which I have never done, because he hasn't allowed it, I don't go out at all. I am trying to figure out how to tell him. Without coming home from work and finding all my stuff thrown on the front lawn. He comes and goes as he pleases, goes to the bars and hangs out but of course I can't with my friends. 
Ahhhhh...HELP