VIDEO : Taylor Swift Makes Fan's Dreams Come True By Crashing Engagement Party

(CNN)After Alex Goldschmidt proposed to Ross Girard in Los Angeles this weekend, they gathered with their loved ones to celebrate. But never in partygoers' wildest dreams could they expect what happened next: a private serenade by Taylor Swift. "There is one secret that I didn't trust any of you with," Goldschmidt told their friends, according to a video posted on his Instagram. I decided to propose to Ross listening to this song in my car.