When the online relationship between two teens went sour, a private sexual encounter suddenly became very public. Now a 16-year-old boy from Ancaster, Ont., faces child pornography charges and a 16-year-old girl could have an embarrassing image hang over her head forever. The boy is alleged to have recorded the girl engaging in a sex act each performed in front of Web cams. Police say the pair had a falling out and the boy sought revenge by e-mailing the video to his friends. It's the modern-day equivalent of the lovelorn scrawling nasty graffiti on the bathroom wall.