Have you ever been backed stabbed by someone you trust so much?

i have been backstabbed a couple yrs back by a neighbor that was always saying "oh your like my sis if you ever need to talk about anything just come talk to me it will stay between us" yea right the fool goes and tells the person i went to talk to him about everything. to this day i know your not suppose to hold grudges but its had i think i might have spoken 4 words to him since