I'm sorry to hear you are still so wound up in what he is doing. Perhaps it would be best if you quit trying to keep tabs on him. He's going to do whatever he wants to do, so the only thing knowing about it does is keep you upset. Sometimes, ignorance IS bliss, when it comes to addicted loved ones.
Please keep your focus on yourself and your two children. They need you to take care of them. Your ex is an adult and will do whatever he decides to do. You divorced him for a reason, so follow through on living your own life and taking care of your children.
