We both don't use it much as far as the timeline goes but I know my H uses the messenger and has private message dozens of women when we were still living together. I'm sure he's still doing the same now.
I am so sick about this, I wish it were hidden, seems like the dirty laundry is out there...
I couldn't sleep a wink last night and the only thing that did give me comfort is that he needs to go through this and it's a part of his journey I can't worry about. I just need to focus on mine. =)