Would you keep a friend on your Facebook profile?

[Guy]

This is for everyone, religious or not:

I had a falling out with a friend of mine about a year and a half ago over a money issue.

We had not spoken since up to about 2 months ago via the phone (just a couple texts and calls, thinking its water under the bridge). But up until about 2 weeks ago I tried to text them a couple of times and no response. Then a week ago they added me as a friend on Facebook so I accepted it and then I wrote on their wall and no return response. I then called them yesterday and no answer but I left a message saying I see them on line give me a call and still haven't heard back.

SO my question is would you keep this friend on your Facebook profile or delete them???

ps-I think they may still think I owe them money but I dont....

Thanks to all helpful responses!!