Hailey Bieber has everyone gushing over her sweet gesture to Billie Eilish! As we previously reported, during his performance of One Less Lonely Girl, Justin Bieber brought up Billie to be his girl during the song. OG Beliebers will remember when this is something he did every night on tour back in the day. He'd pull someone up from the crowd and serenade them with his smash hit, leaving his fans gushing and in tears.