I don't necessarily associate this song with a specific Crossworlds couple. I just find this video to be one of the best things I've ever seen. Here's the link to the full song: https://www.youtube.com/watch?v=h2ymJcCwS_s
Also, I never expected a song called "Guillotine" to be so romantic.
And don't forget, "The Mansion's Twins" is still $0.99 until the end of February! Happy Valentines Day!