AU where people age until they reach 18 and then stop aging until they meet their soul mate so they can grow old together.

i’d never die

but imagine already being in a relationship at 18 and then at 22 you’re both sitting there looking at each other and realizing that you both haven’t aged a day

imagine platonically moving in with ur best friend at 18 and then realizing a few years later that you’ve been aging together

imagine purposely never finding your soul mate so you can reign eternal

holy shit i think we may have stumbled upon the greatest romance/adventure concept ever

What if you killed your soul mate so you’d make sure you never aged.

This just makes me really want a story where the main antagonist is someone who has been killing their soulmate for centuries whenever they find them, and the main protagonist is the newly re-incarnated version of their soulmate