DTMFA!! Please get out now, this man wants to control you.

i don't think it borders on abusive behavior, i think it is abusive behavior. and i think you are bang on with noting this is also dangerous behavior. it is not going to stop here, either. and i have a hunch, it didn't start here either, this is just the first thing you are becoming aware of. next he will be opening your postal mail before you do, and searching in your car, your purse, anything you hold dear and private to you. after that he will be installing keyloggers onto all of your computers to get your email passwords so that he can check your email too, if he hasn't already. he won't tell you he is doing that of course because he knows it is wrong, but when you find out and complain about it he will also tell you that if you had nothing to hide you shouldn't have a problem with it. how do i know? i kicked that trash to the curb a long time ago and he is still a pain in my ass because we are also co-parents. these guys are tough to get rid of too i might add, so tread carefully when you say goodbye, and you absolutely should sooner than later. they really really really don't like it when someone says no to them. my ex husband is currently on an email limit because of his chronic need to send me long abusive hate mails that he thinks i give a crap about (no more than 1 weekly and like i said, only then for custody timings and notifications) he is not allowed to text me at ALL and is required to notify me 10 minutes in advance before he arrives on my property (that rule is in place because he stole my car once). he generally ignores all of these, because he doesn't like the word no, HE needs to be in control or he and his new wife begin acting like foolish children because HE has brainwashed HER into believing that I'M the monster, but i already know he treats her just as poorly. his own parents support me and know what i have been through at his hands, because he is almost as mean to them. he also makes many many comments off hand or otherwise even still today that suggest to me he is still cyberstalking and reading my emails and knows some of my online activities. he might even be reading this right now and we have been divorced for five years. so break up with this guy, and do it as impersonally and as far away as possible, change your locks and your phone number and just start fresh. because the only reason i told you ANY of that is so that you could get a glimpse of your life to be if you don't say no or dont walk away. run, do not walk away. immediately. good luck!

I totally agree with Chrissie. He has crossed the line big time and is being abusive and controlling.

I think you are likely a victim of other crazy behavior as well whether you are aware or not. If you don't know how to, have a computer savvy friend help you search your computer for a keylogger program or hardware.

There is no reasonable explanation for his behavior.

Obviously doing anything behind your back is terrible, I just don't understand how forwarding his calls to another phone changes anything (aside from the without your permission, part).