Is it fair to ask my wife to unfriend a past sexual partner on facebook?

[mravis]

My wife and I have been married for 20 years. Before being married we dated for about 5 years. In the middle of those 5 years we broke up for about one year. During that breakup time, we both dated others. My wife had a 2-night sexual fling with an old school mate. They didnt date, it was only a "two-night stand".

I noticed that this guy is one of my wife's MANY Facebook friends, and it bothers me. I know it was a long time ago and she does know him from school days, but it wasnt like she was really friends with him. The main connection they have is that they had sex. I dont see any reason why she needs to add him as a friend. I dont suspenct anything, but I'd like to avoid any opportunity that he might have to start up a chat with my wife, reminiscing about their passionate nights together.

What do you think of this? And by the way, I have not friended anyone that I dated.