What is the most hurtful thing someone has done to you. exclude family

the most hurtful thing that someone did to me...

i don't think anything can top my breakup with the high school sweet heart because of what he said to me and how i found out that i was being played for the amount of time that we dated.

the fact that a girl called me claiming to be his friend and asking if i was upset that he was already with someone new. when i told her that i wasn't upset if being with her was what really made him happy she continued to ask me if i was then mad and wanted to "beat her up." i told her no and then she openly admitted that she was lying about being his friend and told me that she was his new girlfriend. then she continued to tell me about the details of what they've done while he was with me and she told me that because she never saw him with me (we had a long distance relationship) she thought that he was available. =\

all in the meanwhile, my heart was seriously taking a beating and i was holding back so many emotions but i really wanted to hold them in to hear what else he behind my back.

lots of stories with this particular ex but even after that, we're still friends and talking -- believe it or not.

questions, concerns, or have a topic in mind for me to rant about? :)