Charli D’Amelio has the support of her man. Following her and partner Mark Ballas’ Quick Step to Elvis Presley's “Bossa Nova Baby” -- which landed her on the top of the leaderboard -- the TikTok star gushed about having her boyfriend,Landon Barker, in the audience to cheer her on during Monday night's dance. “He's awesome, he was here tonight,” D’Amelio told ET’s Matt Cohen following the show. D’Amelio and Barker, both 18, have been dating since June.