Justin Bieber had Selena Gomez by his side at an afterparty for last night's American Music Awards in LA. He had quite a lot to celebrate after taking home three awards, including artist of the year, as well as hitting the stage to perform two singles. Although Justin stuck close by Selena for the latter part of the evening, he arrived for the show with a different date. Justin hit the red carpet with his mom, Pattie Mallette, by his side. Last night's afterparty was not the first time the couple have been spotted together since announcing their split last week. Over the weekend, Justin and Selena reunited for a short date night at LA's Yamato restaurant.