Recently you figured out that your co-worker [1], who you’ve always considered a friend, too, is having an adulterous relationship with your boss. She hasn't actually spilled the beans, but you've pieced it together after seeing them at a restaurant arm in arm.

She’s been making references to the new guy she’s been seeing and even asks for your input on certain personal issues. The entire situation doesn’t sit right with you, and you get the feeling that she wants to tell you but she can't. That last thing you want to do is get involved, but you’re sick of hearing about it, so how do you handle this?

Source [2]