A Mississauga teenager updated his Facebook status early Friday morning with a short missive that began by listing the three things he’d learned in his 16 years: “What goes around comes around. Karma is the biggest bitch. You should never change on people who love and care for you.”

“I’m leaving this sad world today,” he wrote, adding it wasn’t worth living any more. Life had let him down too much.

In another update, he listed the 10 people in the world he would miss, their names bracketed by hearts. He ended with his best friend, a girl in his grade who called him her “BFFL” or “best friend for life.”

By 10:30 a.m., he had fallen onto Highway 401 from the Mavis Rd. overpass near his school, Mississauga Secondary.

Police don’t know whether he fell or jumped. He was taken to Sunnybrook hospital with serious injuries.

Two hours later, the body of a teenage girl — identified by nearby students as his best friend — was discovered while police investigated the area near the young man’s fall.

She was found in a wooded ravine in a small park down the street from the school and highway. Police said they would not identify the young woman until they had notified family members. But friends in the area were quick to identify her.

According to a Formspring message board online, the teen’s favourite colour was green and she still watched cartoons on television. Her long hair and smiling face accompanied each message she wrote.

Dozens of police spent Friday afternoon in the park and ravine just off Spinnaker Circle, described by one shocked resident as a quiet family neighbourhood where kids play on the street.

Peel police have yet to determine whether the two incidents, about a kilometre apart, were connected, said Const. Thomas Ruttan.

But rumours flew about the neighbourhood as Mississauga Secondary students trickled out of class Friday afternoon.

Two Grade 11 students said the boy and girl were in Grade 12.

They also said an announcement was made over the public address system at Mississauga Secondary Friday morning, alerting students of an “incident” and cautioning them against speaking with reporters.

Const. George Tudos did not disclose details surrounding the young woman’s death, but called it a homicide.

Coroners and members of the Peel Region homicide team arrived at the crime scene late Friday afternoon to collect evidence.

Teams of officers also went door to door along Spinnaker Circle to question residents.

Groups of Mississauga Secondary students huddled near the taped-off park Friday afternoon.

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One group of girls, claiming to know both students, sobbed as others looked on.

Some of them had seen the young man’s message on Facebook.

“IM SO SORRY WORLDD,” was how he ended it.

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