The EA came to light when I saw her texts showing up on her iPad in real time (her iPad was at home with me, and she was out and about with her iPhone). I later confronted her about it, and she admitted it.
She justifies the texting by saying they are just friends, that’s he’s just a distraction, and that he really listens to her. I’ve explained that those types of “flirty” texts are highly inappropriate for a married spouse, but i suppose she thinks that since she’s “unsure” about whether she wants to continue in the marriage at this point, it’s no longer “cheating” since we’re “on a break.” She’s told me that I can date others if I want to, “as long as nothing physical happens.”