Yes, it is strange about her checking the tat-boy's 6-month pregnant W's FB page. And multiple times/day, just not as much as tat-boy himself. I am surmising that immersing in all aspects of his life is part of the fantasy? Also, W has many pictures of her and tat-boy and tat-boy alone, maybe she is looking at these? Who knows. All I know is, she hasn't let it go and is just trying to be more secretive about it.
As far as the EA, I know (because she admitted it to me when I confronted her) that she texted him after many drinks when visiting XYZ city in April and that she PMd him the next day because she was so mortified that she had. To my knowledge, that is it for contact, but I wouldn't be surprised if there was more.
Me; 42, W; 43 M; 16 yrs S12, D9
3/13 - "I want to move to XYZ City (four hours away) and it might be without you, not sure" 5/13 - "Not sure I meant that"