FIL likes stuff up his butt.

MIL thinks he's gay if he does.

They've been married 35 years.

So MILs friend (girl) comes over and starts talking about liking putting stuff up guys butts in front of MIL and FIL.

MIL doesn't say anything. She cheated on FIL 4 times that we know of and because of that FIL agrees to be swingers.

Well, since MIL didnt object and she has cheated on FIL with 4 guys (that we know of) he goes over to this chicks house.

Well when FIL walks in MILs friend locks FIL in and calls MIL.

MIL gets pissed and starts smoking again.

OH and I agree that MIL set up FIL and we don't want that kind of manipulate manipulation around our son.

Are we wrong to bring it up at all? Or should we just let it go?

Guys I wish we weren't involved but FIL confided in us bc he wants to know what she was thinking, and wants me to get it out of her or he's filing for a divorce.