Ex Best Friend is Harassing me

[animalcrazy]

Feed the flame, fuel the fire. Don't send back the RSVP. Don't have any contact with him for any reason. If he gets any reaction from you he will see it as encouragement. Out of sight, out of mind. Let him just fade into the sunset.

[hothulamaui]

don't respond to the RSVP, he is probably counting on your politeness knowing you will answer. if he continues to send you letters and harass you, file for a restraining order, he will get the message.