With the soulmate AU (from what I've seen.) is where one person gets a tattoo of what there soulmate thought of them when they first saw them.

Craig doesn't know what the hell happened. All he knows is that he's getting socked in the face by a pretty blue eyed blonde boy the second he walks into his new school. And he's smitten. ♡ All art drawn by me ♡ And just to be clear, this isn't some weird abuse story lol

Tweek Tweak and his parents move to South Park, Colorado to start their own coffee shop. School is rough with Tweek being bullied for twitching and stuttering but when Craig Tucker notices his whole life changed.