Hailey Baldwin and Justin Bieber are officially engaged. But Baldwin has been “fangirling” over Bieber years before they even started dating. On October 17, 2011 Baldwin tweeted congratulations to Bieber for “Mistletoe” becoming #1. She later tweeted again after watching a performance at the “Today” show in late November. Afterwards her tweets kept coming, like in 2012 when she wished him a happy new year.