Hi, this is currently happening to someone I know well and is close to me in such a way that any fallout would affect me. Maybe not directly but definitely indirectly.
The people concerned are: a husband, his wife and his best friend.
Before husband and wife got together, along with the best friend, they all went to the same club and the (now) wife had an affair with the (married) best friend which ended. So let's just say that wife and best friend are definitely OK with infidelity.
She then moves on to the man who is her (now) husband.
Anyway the situation is that the husband now takes their child every week (same day each time) to see it's grandparents during which time the best friend visits their home to spend time alone for hours with his wife.
It's like an hour's journey there and back so plenty of alone time.
This has been going on for months.
The husband is completely aware of the situation but seems unfazed.
It's not my business but I find this really f*ing dodgy and can't help but think they're up to no good again. The husband seems oblivious to the dodginess of this.
I'm not going to say anything but between me and the people of mumsnet, aibu to find this dodgy?
As a side note, they were only fwb- he didn't seem to want a relationship, she very much did, until she got pregnant but he thought he ought to do the 'right thing' and proposed that they became a proper couple.