Falling in love. Such a silly and mortal excuse. Whis had lived more years then could count and in that period of time he had seen countless mortals "falling inlove" he had seen how this "love" takes them to a point where they are ready to sacrifice self. Not until he fell inlove with you himself. He had kept a close eye on you since the day you came to bulma's house to help her and soon he was inlove. He had to go back to planet Beerus to his lord and take you with him