Asking for a friend.
Would you think anything untoward was going on if a married man befriended a married woman. They got on extremely well. He phoned her weekly for friendly chats and didn’t mention these conversations to his wife.
Would you think that they just have a nice friendship or would you be suspicious?
If you overheard their conversation and it truly was just a friendly chat for half an hour, nothing inappropriate, but nonetheless secret, would you still be suspicious?