In this world, at the age of 18, you receive a mark on your neck. Your soulmate has the same mark as you (Though, whether it's romantic or platonic (QPR) is their choice.) You and your boyfriend's marks... don't match...

"Wha-what? N-no. This... this can't be real, r-right?" He stutters, looking back and forth at your mark and his. He doesn't want to believe that you two aren't soulmates.