Selena Gomez hit the town with her ex-boyfriend's long time pal Jaden Smith for a night out in London. Selena and Jaden are both in the UK promoting their individual projects -- Selena is promoting her music and Jaden is promoting his movie 'After Earth.' It was actually during a BBC radio interview that Jaden first learned that Selena was also in London-town. Jaden was very openly excited to hear that SG was also in town, so much so that his Dad, Will Smith, started teasing him about it, and Jaden just laughed it off saying he was excited because she's a good friend. After the radio interview, Jaden and Selena must have connected because later that night the duo was spotted out together. The pair dined at upscale Hakkasan, a restaurant that Hollywood A-listers frequent. Selena, who's been a bit under the weather, looked amazing, wearing a long black sheer dress and a great pop of red on her lips. Jaden, the consummate gentleman walked a bit ahead of Selena guarding her from the swarming paparazzi. After dinner, Jaden, Selena and Jaden's dad Will Smith headed to Boujis nightclub, where Will's oldest son Trey was dj-ing. According to some reports, Jaden was unable to enter the club, but the official twitter page for the club tweeted out to say that both Selena and Jaden were in the building and the club later thanked Trey Smith for a great night and also thanked Selena, Jaden and Will for coming out..