Kelly Clarkson shed almost 20lbs this past year…and it’s all thanks to one little secret: LOVE! Sometimes when people get in relationships, they tend to gain weight from constantly going out to eat together and stuff, but other times…or even after that period…it motivates people to get in shape. And the latter is exactly what happened with the newly-engaged singer. See what Kelly said about love and her diet below. Marisa Mendez