I think 'Love at first sight’ can happen, but most often infatuation begins with fondness or comfort in each other’s presence. Later there comes a flush or a quickened heartbeat upon encounter, or maybe a heightened energy when you are together. As the infatuation continues, separation from your love creates a great deal of anxiety. When not together, you daydream about reunion and anxiously anticipate the next encounter. To comfort yourself, you might replay former encounters in your mind, sleep with a shirt left behind, listen to a song that reminds you of him or her, or listen to an old message on your answering machine. As the relationship takes on special meaning, you long for further contact and spend time and energy scheming about ways to get together.