A jealous hairdresser stabbed her boyfriend to death after losing her temper with him for spending too much time on Facebook. Terri-Marie Palmer, 23, used the social network to post a message saying how much Damon Searson 'pissed me off sitting on Facebook, completely blanking me when I'm talking to him'. Moments later, she snapped and plunged a bread knife deep into his heart while he checked his messages online. She then rang 999 and claimed the unemployed 24-year-old had accidentally stabbed himself while they were 'messing around' in the caravan they shared in Heysham, Lancashire. Police said Mr Searson was found on the floor inside the caravan with a duvet over him, while Palmer sat in the floor. A blood-stained knife was found on the sofa behind Mr Searson. Paramedics attempted to transport him to Royal Lancaster Infirmary but he was pronounced dead on arrival.