direct to your inboxA teenager accused of murdering a schoolboy told a jury he felt 'ashamed' at the 'pain' he had caused, adding: "The killing... I’ll never forget that."Matthew Mason, 19, is on trial at Chester Crown Court.He admits killing 15-year-old Alex Rodda in woodland in Ashley, Cheshire, on December 12 last year, but denies murder.The jury has heard Mr Mason paid the Holmes Chapel High School pupil more than £2,000 over a three-week period.