Stancest but Dipper also has a crush on Stan and Mabel on Ford. Dipper gets jealous of Ford and Mabel of Stan but soon the younger Pines twins just realize they had crushes on each other and were just projecting on the older twins
This is actually so funny to meeeee
Cause it would just them crushing on their grunks for bunch of reasons that are actually just things that remind the nibs of eachother.
It would start when they find out about the grunks relationship (theyve been projecting themselves on those old men so hard, in so many different ways, its crazy) and just escalate from there.
Like dipper, who sees himself as ford and Mabel as stan (even if he doesnt realize it) not only getting jealous when he sees Ford being all touchy with Stan, cause he's convinced his crush is on Stan, but also when he sees Mabel trying to spend more time with ford he just starts seething. And just being a little asshole about it like glaring at Ford thinking: "Cant have shit around here."
Cause yes he wants Stan but also he doesnt want Ford going anywhere near Mabel.
And Mabel, bless her sweet heart, going from Stans #1 supporter to his biggest hater. Stan cannot catch a break when it comes to her and she's so passive aggressive but in a sweet way that it has him confused. He cant go near Ford (or Dipper) without incurring her silent wrath. He'll offer her breakfast and get a: "Why don't you ask if dipper wants stancakes." and stan's just *kicked puppy face* because he doesnt know what's going on.
And both of the Stan feel like they're getting whiplash cause the younger twins have gone full 180° on them.
So then youd have the stans just laying together confused after a long day of walking on eggshells like:
Ford: I think Mason hates me now?
Stan: Eh, thats not too bad. Mabels plotting my demise.
Ford: Thats interesting... She asked to go with me on my next "excursion"
Stan: Dipper told me I "look nice"...
I think it'd take forever for them to realize what their feelings actually are. Dipper only has a crush on Stan because he's eccentric and weird in all the ways that remind him of Mabel and the same goes for Mabel with Fords nerdiness and excitement for all things weird.
I dont know how they would figure it out but I just imagine afterwards them going back to their Grunks all remorseful and apologizing.
Dipper shuffling into the lab like:
Dipper: Great Uncle Ford? I know I've been a jerk but I actually don't hate you... And I'm sorry I tried to break up you and Grunkle Stan.
Ford: Well I'm glad- You tried to what!?!?!
And Mabel snuggling up to Stan all shy and apologetic while he's making breakfast.
Mabel: I think i'll take some of those stancakes now Grunkle Stan. If thats okay?
Stan: Sure thing sweetheart. So... We all good?
Mabel: Yeah and I'm sorry I called you a home wrecking whore.
Stan: I don't remember you calling me that...
Just,,,,,,,, hear me out?!!?!?!
Anyways, sorry if this isn't what you meant, this is what came to mind >_<