Hi Sarah,
The phone thing is so normal. My W went nuts because she was just so sure I was stalking her through her phone! Of course I wasn't but that, again, is projection. My W was so much in a hurry to transfer her number from the family plan. It ended up costing so much more but she so wanted to be so certain I wasn't in her "business", it was worth it! If there is nothing to hide why the paranoia?

My W was always on her phone texting. Not to OM but to her new friends. She would ignore everyone around her including the kids. In my case the OM (for now) is her father. Now she is always texting him as well as her friends. We are the cause of their unhappiness, they are the ones who "get" them. That is why they are always on the phone. My W went from never even bothering to Facebook to constantly on that and instagram and half a dozen others. They can be whoever they want one these sites. They aren't questioned about what they say or expected to be a part of a family. Having to think about anything but themself is pressure to them.

In my case I had to release her number. All your H has to do is call 611 and tell them he is giving up financial responsibility for just your # and they will make a note on the account which allows you to get your own plan. If he has another plan and left you on a family plan, you are paying WAY too much per month. But to him it's worth it to cover up what he's up to, I guess. Hang in there Sarah. It really does get better.