how will you know you're in love?

is it when you cannot stop thinking of his face, his smile? when you just catch yourself smiling because you remembered something amusing that he said? when you still remember how you felt at home when your fingers interlocked? when you yearn to feel the security when your head is just on his chest? when you remember how you danced without music? when it feels so right when you laugh together? when you remember his smell? when you like the way he plants soft kisses on your head? when you... jeez... i can go on forever.