its the feeling you get in the pit of your stomach, when your heart pounds so hard till you think it may explode, not wanting to trade them for the world, because they are your world, you see them, their eyes light up, and you feel there the only person in the room, their very touch makes you melt, and there is no one else who can make you weak, no one else who you can be yourself with. that is somewhat of an explination =]