Wedding day is one of the most important days in a couple's life. It is the day when two people in love take a vow to be together forever. It is the most magical day of their lives when all eyes are on them, but their eyes are on each other.

When they look deeply at each other as they take their vows, the couple go through so many emotions that we can only imagine. There is so much to say and just a few lines to express that it can get overwhelming for the love birds.

Something like that happened to 24-year-old Katie Musser on her wedding day when she burst into tears. But it wasn't her feelings for her future husband that made her emotional, but rather his ex-girlfriend. What Katie did halfway through her wedding ceremony shocked everyone.