Not sure what to do about this situation at work.
I work as a project manager, I'm not in management but I oversee a team producing specific pieces of work. I'm friends with another project manager, call her A, who does the same role but over a different team for a slightly different type of work, but we essentially do the same job. Our overall manager, call him B, manages 4 teams doing slightly different types of projects. The other two project managers I'm not as close to because I haven't worked with them as long. A has become quite close to one of her team, call him C, over time, as they share a sporting interest so started doing that together outside of work.
A and C are both married, unhappily as far as they say, and have become closer and closer (A has told me the details) until it's at least an emotional affair, bordering on a physical one (the odd kiss and a little more - I honestly don't think they've slept together, but absolutely not just friends either). After the odd kiss I've warned A, as a friend, about what a bad idea it is etc, the risk to her job and marriage/life, and to C's etc. Each time she's agreed and said 'never again' but it's still carrying on and I suspect they're crossing the line more rather than less to be honest but just keeping it secret.
Now A is telling me how her husband has suspected/knows and threatened to leave so they're going to marriage counselling but she's still doing the sport with C. As a friend I've told her nicely but bluntly she needs to put a stop to it, and again she's agreed but I've no idea if that's true.
Purely in my work role, forget personally, what do I do about this? If it was one of the other project managers, especially a man with a subordinate woman, I'd report it to my manager but I don't know if I should in this case -
- B is extremely close to A (I genuinely think there's nothing untoward there, they just started the department together originally and B is very lazy so depends on A to do half his work), so would almost certainly brush off anything I raised anyway and go straight to A about it.
- I'd obviously torpedo any working relationship with A, let alone friendship, she wouldn't forgive the 'telling on her'.
Between 1 and 2 I think I'd have to look for a new job which I can't really afford to be doing, but I feel ridiculous having seen what's happening and letting it continue. I've even suggested to A that C could transfer to one of the other teams, there's one that he'd be just as skilled for so it wouldn't look at all strange, but both of them want to stay on the same team.