NEW BRUNSWICK - The man Tyler Clementi was being intimate with when he was allegedly spied on by his roommate testified today in the bias intimidation trial of Dharun Ravi.

A judge ordered that no audio be transmitted while M.B. testified in order to protect his identity. He also ordered that courtroom cameras not show M.B.'s face.

M.B. said that when he met with Clementi on Sept. 19, 2010, Ravi was still in the room. "He walked over to the desk and shuffled around a little bit and walked out," M.B. said in testimony.

M.B. also said he noticed a webcam pointed toward the bed while he was intimate with Clementi. He testified that after three visits to the dorm, he was getting uncomfortable meeting there. However, he says he never spoke to Clementi about the webcam or his concern it may have been pointed at them.

Clementi committed suicide days after his last intimate encounter with M.B.

Ravi faces 15 criminal counts, including bias intimidation and invasion of privacy. Classmate: Ravi used webcam to record ClementiResident assistant testifies in Rutgers webcam spying case Key witness returns to stand in Rutgers webcam spy case Testimony continues in Rutgers webcam spying case Testimony begins in Rutgers spying case Opening statements in Rutgers webcam spy case Jury selection complete in Rutgers webcam spy case