Have you ever wondered what makes a person fall in love? Many of the cliches you've heard like "opposites attract," may not be true. Some experts say although you've been told "birds of feather flock together," it's not always true. They say in fact there are numerous scenarios that cause a person to fall in love. "Love is an expression of a commitment to a relationship and that it takes different expressions depending on the kind of relationship," says JMU Professor of Psychology Lennis Echterling. Dr. Lennis Echterling says research has found the cliches we hear over and over about love aren't true. What makes a person fall in love is their shared experiences in a relationship. Dr. Harvey Yoder of the Family Life Resource Center says instinct also has a lot to do with it. "To make us want to attach ourselves to other people and ultimately to mate, to multiply and to replenish the earth," says Harvey Yoder, family life counselor. What about love at first sight, ever wonder if there's any truth to that? "You can experience infatuation at first sight, you can experience a heightened sense of attraction at first sight, that's very powerful, but in terms of what really lasts, I'd be more interested in what happens at the second sight, or the fourth, or the tenth, or the twentieth," says Yoder. Dr. Yoder says Valentine's Day is a good time to express your love for someone. "It's a good time for all of us that are in a relationship to just to be reminded that we need to do those extra things and not just take each other for granted, that we verbally and in other ways, that we demonstrate that we think the other person is special," says Yoder. Dr. Yoder says one way to make a relationship last is to let your partner know how you feel.