A 19-year-old student was driven to suicide by girl bullies, an inquest heard. Lewis Thelwall hanged himself after false rumours about him were put on Facebook.
Philip Rogers, coroner for Neath and Port Talbot, said the two women had written 'malicious and completely unfounded' posts about 'colourful' Lewis on the site.
The teenager, who was known for dyeing his hair bright colours, was the victim of 'malicious and completely unfounded' allegations spread about him on Facebook.
Detective Constable Lee Stephens, of South Wales police, described Lewis as a 'happy-go-lucky character' who was upset at Facebook slurs.
He said he interviewed several young people after Lewis's death and investigated the Facebook comments before cautioning two young women, who can't be identified for legal reasons, for malicious communication.
Detective Constable Stephens said: "The two have apologised for their actions."
The coroner said there was a 'long and complicated' story involving Facebook messages which he could 'only describe as Facebook bullying'.
He added: "I would urge anyone who uses this sort of social media to think of the consequences."
Mr Rogers said comments made online caused Lewis great distress.
He said the effect was exacerbated because Lewis was vulnerable after the death of his father.
The coroner said: "Two young women known to Lewis have taken it upon themselves to make entries on Facebook which they now accept as malicious and completely unfounded.
"Sadly he was a young man who was vulnerable because of the death of his father.
"The two young women have accepted their responsibility for these messages. They accepted they had little idea of what affect it would have on Lewis."
Mr Rogers said he was satisfied that Lewis hanged himself and recorded a verdict of suicide.
Lewis's mother Tina also warned against online bullying, saying: "Be careful what you write. Behind closed doors you don't know what is going on. They did not understand what Lewis was going through."
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