Channel your inner Justin Bieber and set your feelings to music. Think how much of a rock star you'll be in your girl's eyes if you sing her a love song on her front porch or under her window? She'll think you're a modern-day Romeo with a guitar.
If you're bold enough to attempt a serenade, pick a song that's not only romantic, but that also captures how you feel about your date, like the Righteous Brothers' "Unchained Melody" or Stevie Wonder's "You are the Sunshine of My Life." Better yet, sing her favorite song.
You'll score big points for this over-the-top romantic movie approach. Remember Julia Stiles' reaction when Heath Ledger serenaded her character from the bleachers in "10 Things I Hate About You"?
One word of advice, though: Serenading your sweetheart only works when you can actually carry a tune. If you made the "American Idol" blooper reel, or the neighborhood dogs tend to start howling when you break into song, skip the Heath Ledger approach and instead follow John Cusack's lead from "Say Anything." Hold up your boom box (or hook your iPod to a speaker dock) and let one of her favorite musicians do the singing for you.