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Tyler Clementi's "mystery guest" takes the stand in Rutgers spycam trial

Dharun Ravi AP Images

(CBS/AP) NEW BRUNSWICK, N.J. - A jury has begun hearing testimony from "M.B.," a man who witnesses say was watched via webcam while kissing Rutgers University student Tyler Clementi who committed suicide days later in September 2010.

Pictures: Tyler Clementi

Clementi's roommate, Dharun Ravi, is charged with invasion of privacy, bias intimidation and other crimes. He is accused of secretly watching Clementi's liaison with the "M.B." Prosecutors say Ravi used a webcam to see what they were doing once - and tried to do it again on a second visit.

M.B.'s attorney, Richard Pompelio, says his client was apprehensive but resolute about giving his testimony. Asked to describe M.B.'s mood on the eve of his first public appearance in the case, Pompelio said, "How would you feel when you know you're going to have open heart surgery the next day?"

"He's coming into a strange environment over which he has unfortunately no control, and he's going to do the best he can to get through the thing unscathed," Pompelio said. "He knows it's got to be done."

Complete coverage of Tyler Clementi and the Dharun Ravi trial on Crimesider

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