You are willing to share openly with them. The relationship is one of giving and receiving. If you are giving only to receive, you're manipulating. You're giving in order to get. By recognizing your own needs as you approach the relationship.
Some people go after a relationship because they are lonely.
Others love the idea of being in love. Still others get into relationships because they're afraid they will end up as bachelors or old maids. And yet still others are trying to get unmet childhood needs met.