How Would You Tell if Your Boy/Girlfriend is Cheating on You?

@markdan (127)
Philippines
February 7, 2007 1:32am CST
Guys, Would anyone tell me how to find out if your guy or gal is cheating on you? What are the signs? Would it be 100% proof of evidence? Any Stories that you have encounter? Im having Hard time figuring out with my Girl.
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