Agh i know how you feel!! That happend to me on another forum!!
Just ask him why he wants to befriend you so bad. Or say you don't accept random friend requests because you don't like having people in your contact list you never talk to.
Would something like that work?
Nd no i don't blame you... It's annoying as well as putting pressure on you.. People shouldn't do that in general.. They wouldn't like it if someone did it to them! Well depending on the person of course.. Some people like that sort of thing