Taylor Swift is trying to set-up BFF Selena Gomez with One Direction's Niall Horan, according to HollywoodLife.com. As John Basedow (@JohnBasedow) reports, the 'I Knew You Were Trouble' singer wants Selena to get over her Justin Bieber addiction by replacing the Biebs with Niall, who she considers to be a 'complete gentleman.