Matthew Burdette, 14, left a note saying he couldn't "handle school" any longer before killing himself on a family holiday - two weeks after the alleged sex act.
Matthew was told to leave class for eating sunflower seeds and visited the bathroom.
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A classmate then allegedly secretly filmed Matthew in the cubicle; he posted the video to Snapchat, Vine and other social networking sites, claiming the teen was masturbating in the footage.
His distraught aunt told News 10: "It went viral.
"It went beyond his school. It went to other schools in California. Kids in the neighbourhood who didn't go to Matthew's school had heard about it and seen the video that was taken of him."
For two weeks, teenage bullies made Matthew's life "miserable" - and now, following their son's death, Matthew's parents have launched a lawsuit against his school.
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Timothy and Barbara Burdette, who are suing the school district for $1 million, have said school staff in California were aware of the video and subsequent bullying but did nothing to prevent it.
"From the moment the video was posted, Matthew was mercilessly bullied, harassed and teased by students who had seen the video.
"Matthew's once positive and outgoing personality was now wrought with insecurity and depression."
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The heartbroken parents, angry that the school have not told them what has been done with the boy who filmed their son, are hoping their lawsuit will highlight the dangers of cyberbullying.
California has an anti-bullying law which could see the boy who filmed him charged. He has been arrested by the San Diego Police Department over the incident, with a juvenile court hearing set for July 23.
Meanwhile, the girl videoed in the now infamous Magaluf video is still being mercilessly trolled on Twitter and Facebook.
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Fingers crossed that people read about the tragedy in California and learn from it.