Mr G ran into an old flame at a reunion. (I was with him). She started emailing him under the guise of having him come to her business on a consulting trip. When he replied that WE would be happy to come, the emails stopped. He was so surprised!
As close as I ever came to this scenario was when my brother's ex-wife called me before I was deployed to Germany (she was German and divorced him when he came back stateside to get a place ready for them and their son). She kind of sputtered and stopped talking when I told her my then-fiancee and I would be happy to stop by and see my nephew.
No calls since then!