Well when Tulisa was spotted arriving in America last night, she certainly didn’t look bothered that her relationship has just ended. Tulisa was also all smiles getting on the plane in London before she flew to The States. She had earlier confirmed on her twitter account that her 3 month relationship with Jack O’Connell was over. That’s the second relationship to end this year for Tulisa – she only split with longer term love Fazer from N Dubz at the start of the year. Tulisa did hit back on her twitter account at people who had suggested that she ended the relationship. She said: "4 the record I didn't dump any1, it was a mutual decision with no hard feelings n that's all there is 2 it," She then added: “now then. Take off time. Bring on the fun. Woooo. Misciveiousmosser” That last tweet is definitely from a single lady who intends to have fun. Other sources have also said that it was a mutual decision as their work schedules just didn’t fit together. A source said: "Jack is filming the new 300 sequel in Eastern Europe and will be there until November. He isn't able to travel to the UK at all, as filming schedules are so tight. This meant Tulisa was flying backwards and forwards to Bulgaria – as well as fulfilling for her X Factor duties". Jack O’Connell may well be gutted. Until the relationship finished, he could say that he was dating officially the sexiest woman in the world – Tulisa had been given that title by FHM several weeks ago. We’re sure there are many girls lining up to help him get over her though.