Eighteen-year-old Tyler Clementi, a freshman at Rutgers University, committed suicide last week after he was outed, the AP reported.

Friends and family say they are heartbroken by their loss.

“I am just devastated that this happened, especially to such an amazing person,” friend Christina Guentert told ABC News. “Tyler was a remarkable person in many ways; he was always kind, generous, sweet and loyal.”

Clementi took his own life after his roommate, 18-year-old Dharun Ravi, allegedly secretly filmed him having sex with another man and streamed the footage live on the Internet. Ravi messaged his nearly 150 Twitter followers an invitation to watch: “Anyone with iChat, I dare you to video chat me between the hours of 9:30 and 12. Yes it's happening again.” Officials have charged Ravi, and freshman Molly Wei, with invading Clemeti's privacy.

Moments before he jumped off the George Washington Bridge, Clementi wrote on his Facebook page: “Jumping off the GW bridge sorry.”

Authorities who recovered a man's body Wednesday afternoon in the Hudson River were trying to determine if it was Clementi's.

Gay rights activists are also mourning the death of a 13-year-old California boy, Seth Walsh, who hanged himself from a tree on Tuesday after teens had allegedly harassed him for being gay.

Steven Goldstein, chairman of Garden State Equality, New Jersey's largest gay rights advocate, lamented Clementi's death.

“We are heartbroken over the tragic loss of a young man who, by all accounts, was brilliant, talented and kind,” he said in a statement. “And we are sickened that anyone in our society, such as the students allegedly responsible for making the surreptitious video, might consider destroying others' lives as a sport.”