Any eloquent speakers out there that can help me take the high road?

How do I tell someone (suspected OW, known EA at least) they are not my friend, mean nothing to me and that they are not worth my time???

She is getting more obvious in her attempts to be friendly to me. Want to be prepared for her trying to strike up a conversation with me.

(Formerly blgp)
Me-35
H-33
Married 4 yrs
Together 9 yrs
"Bomb" 8/1/10
Separated 8/6/10
D filed 10/21/10, on hold til 1/11

"If you want to hear God laugh, tell Him about your life plans."