need help important to me atleast lol (poems)?

my Girlfriend is going away for a few days on a buisness trip and i usually write a poem for any special occasion and i know its not THAT important but i think she'd like it. I can usually write these poems with ease cause i'm not that bad but i guess i'm having trouble this time because i really don't want to see her leave. if anyone could hlep me out with a starting or something i'd apprecite it. something jsut to remember me by.