How do you delete all contact with someone on Facebook?

[Cheese it]

I want to make it look like I was never friends with the person. Two, actually. I've liked their statuses and commented on their posts; is there a way to delete them and make it look like I never did? I've gone on their walls and individually deleted as much as I could, but I know there's more. Anyone have any ideas? (I'm going to block them after I get as much as I can GONE!)

[Jack]

Once you delete and block someone, everything you liked or commented on there profile is gone. Same for everything they liked or commented on your own profile.

[Slappy]

Blocking them should pretty much do that.

[RealityBytes]

What are you hiding ? you nasty low life coward

[Partha]

GO to Info and then you can delete contact.