One Direction may have lost a "brother," as they referred to Zayn Malik at last night's Billboard Music Awards, but one of them may have gained a girlfriend. Sorry, lovelorn fans, but it was bound to happen sooner or later. The lucky lady is one Briana Jungwirth, a "mystery blonde" who has been spied on at least three dates with One Directioner Louis Tomlinson, the Daily Mirror reports. Jungwirth is described as working in fashion in California. Her Twitter profile pic also features her posing with Tomlinson and other friends. Tomlinson recently split from girlfriend Eleanor Calder after four years of dating. According to a source, he's now single and ready to mingle. "Louis is mainly in L.A. to work on 1D’s new album but he is also making sure he is having plenty of fun," the insider told the British paper. "His friend gets on with her friend, so they’ve all been hanging out together. He is young and single, so why not?" Why not, indeed? Watch this space for romantic updates.