My (31m) wife's (33f) best friend (32f) is cheating on her husband (36m) with his best friend (37m). Would I be in the wrong for exposing it to her husband?

Already crazy, I know.
All of these people are in my friend circle too
To make it easier to understand
T= wife's best friend
P= Her Husband
V= Her husband's best friend
T and P got married 2 years ago, relationship has been a shamble since before they got married. Wife was matron of honor at T and P's wedding, no kids together but T has kids from previous relationship.
T has been cheating on P for at least 6 months until recently when V blocked her on all platforms and cut contacts after beginning to date a girl (she's not in our friend circle and also the mortal enemy of T). Now T has started to spout off about the affair to not only my wife but now her sister. Not because T feels guilty but because she caught feelings and feels hurt that V cut her out. When asked about coming clean to P, T continues to change the focus about how she's the victim with V.
Of course my wife and T's sister keep telling her what she is doing to P is just wrong and she should come clean to P.
I've already talked to V about how he's lost respect from me and this was just before he blocked her. It just pisses me off that P consistently gets the short end of the stick in every aspect.
TL;DR Friend is cheating on her husband with his best friend after being married for 2 years. I want to inform the husband about the affair.
Should I tell P about the affair?


Source.