mxrleness
On your seventeenth birthday, you have the option to go to a Soulmate Centre and get the serum injected into your body. Cassius Sencen, the mastermind behind it all, was labeled a genius.
Keefe Sencen turns seventeen in eleven days. Because his father was this famous person who invented an insane serum, they moved around a lot. Australia, Italy, France, Mexico, Qatar, Canada, and more. A whole lot of US States, too.
After two years in Italy, they moved to Los Angeles. For good, his father told him. Keefe expected Hollywood celebrities and the usual galas slash interviews. Little did he know, a brown eyed girl called Sophie, was going to change his life.
Sophie Foster turns seventeen on October 24, 2040. She is not looking forward to potentially meeting her soulmate. What was the point? After what happened between Jolie and Brant, she didn't really believe in that stuff. Then again, Brant was a psychopath.
When a 'spoiled' boy, the son of Cassius Sencen, transferred to Foxfire Secondary Academy, Sophie expected nothing but your usual playboy. But as she grew older, she would look back on Fifth Year and be so thankful she met Keefe.
or
Two teenagers get injected with a suspicious liquid on their seventeenth birthdays and realise they're each other's soulmates.