A 17-year-old was convicted of murdering a former friend he knifed 12 times in the back in Scarborough.
Macauly Jenkinson was only 16 when he launched a ferocious attack on Michael "Angel" Graham, 19, on the Scarborough seafront in April.
He was convicted by a majority of 11-1 of murder, and wounding with intent on another teenager, who cannot be named.
Judge Simon Bourne-Arton, the Recorder of Middlesbrough sitting at Teesside Crown Court, lifted reporting restrictions on the media identifying the defendant because of the public interest in the case.
The jury was told Mr Graham and his attacker had been friends but fell out when Mr Graham taunted Jenkinson over his relationship with a girl which started when he was 15 and she was 14.
After the guilty verdicts, Tom Roberts QC, prosecuting, said the offences were aggravated by the ferocity of the attack, from behind on the defenceless victim.
Jenkinson had assembled a group of youngsters and had encouraged them to arm themselves and support him, the barrister said.
It happened in front of a group of youths, some as young as 14. The seriousness of the case was also aggravated by it taking place in public, on the seafront, he said.
– Statement from family of Michael Graham
In the early hours of Sunday 14 April 2013, our lives were shattered by the news that Mickey, also known to his friends as Angel, had died.
Not only have we lost a son, grandson, brother, nephew and a dad, we have also lost a friend who loved his family and was always there for us when we needed him, no matter what.
He was a good friend to many and we would especially like to thank one of his best friends who was with him at the end.
It is a great comfort for us to know that Mickey was with such a close friend. He is also a victim in this case and our thoughts are with him and his family at this time, as they also struggle to come to terms with what happened.
We would like to thank North Yorkshire Police for their hard work in bringing this person to justice, in particular we would like to thank our two family liaison officers who have been with us throughout.
We would also like to thank Mr Roberts and Mr Adlington who presented the case at court.
We hope that Mickey can now rest in peace and we are allowed to get on with our own lives and continue to grieve in private.