Ok, she doesn't want the hubby to know about the emotional affair. Now you're in bad territory. Sometimes these things happen, but don't expect her to leave her husband. Yes they are in an open relationship. But love isn't part of the deal. You're there for sex, maybe friendship, nothing more. So deal with it.
Sometimes a little emotional involvement is expected in these things, and the main couple talks about it. It's all fun and romantic, it runs its course, and is over in 3 months. End of story.
I have a long time interest in psychology, specializing in relationship dynamics for 30 years.
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