If you live close to a beach, wake up about 30 mins before the sunrise and set out a warm blanket, a stereo with a mix of your personal love songs, and stick a letter in a bottle saying "The sun will rise and the sun will fall but my love for you would never rest at all" and then plant the bottle in the sand. Next go wake up your partner and bring them there and watch the sunset together, play your songs and read the love note. He/she will love you forever!