If I were to ask you what might make someone in your life -- whether a friend or dating prospect -- build a deep affection for you, what would you say? Your first instinct might be to respond with, "Doing nice things for them." Ironically, though, research has shown that we can actually get people to care about us more by having them do favors for us.  At first blush, this might seem rather counterintuitive, but it actually makes perfect sense. We have an affinity for the things and people we invest resources in -- whether time or money. So if we're taking time out of our busy day for someone, we start to think, "Hey, I must really care about this individual if I'm going the extra mile." Sure, if people do nice things for us, we can form a favorable impression of them. But it isn't until we find ourselves going out of our way for them that we realize they may very well occupy a special place in our heart. If being nice alone did the trick...