What is the name of music video where Carrie Underwood going to get married and you think she marry one guy but chooses other?

The name of the music video you're referring to is "Just a Dream" by Carrie Underwood. In the video, Carrie Underwood is preparing to marry a man named William, but she realizes that she is actually in love with another man, named Travis. On her wedding day, she chooses Travis and breaks up with William, deciding to pursue her true feelings. The music video follows Carrie as she makes the difficult decision and ultimately follows her heart.