Any quotes of a friend betraying you ?

so like a month ago i told one of my BESTFRIENDs that i liked this guy and i told her i liked him. and on friday my guy friend told me she made out with him at a kickback , i was so mad i confronted her about it and she admitted it... i cant believe she did this to me .. we were reallly close and i want a quote about trust cause i will never trust her with my stuff again