Be∙tray (transitive verb)- be∙tray, be∙trayed, be∙traying, be∙trays
 
- Help enemy
To harm or be disloyal to a country or another person by helping an enemy or giving information that is confidential
 - Surrender somebody or something treacherously
To deliver somebody or something to an enemy
•He betrayed his own brother to the secret police.
 - Go against promise
To act in a way that is contrary to a promise made
 - Reveal something
To show something, often unintentionally
I'd like to point out that I feel betrayed. Not by friends but by family. Why is it so hard to just be honest? If you can't trust your own family then who can you trust?