(Commissioned by Jase.)
"Weirdmaggedon was over, the twins were gone, and Wendy was miserable. School sucked, her new boyfriends sucked, and she even tried a few girlfriends that sucked even worse. She missed all the time she spent with Dipper and Mabel, and in her frustration of breaking up with her latest fling she face-planted herself on the bed only to be jabbed by something hard under the covers.
Wendy removed the blanket to find Bledin Blandin's time tape with a note to herself (that she couldn't remember writing) to try it out. She ends up going back 10 years to when Dipper and Mabel encounter the younger Wendy and Tambry on their trikes and realizes that Dipper was her precocious crush from her own childhood.
Armed with that knowledge, Wendy relives and rewrites her summer. She crushes the Mystery Fair Ball Toss and knocks out another one of Robbie's teeth for all the things he would've done.
Wendy spends way more time with Dipper in this timeline, coaching him, building his confidence. When he finally does confess his crush, she reciprocates with tongue. When the two finally get around to making the Crystal Flashlight, things get big and sexy very quickly."
(Full versions found here and here.)
(Bigger versions found on my Fanbox.)
SUBJECT: Gravity Falls, Wendy Corduroy, Dipper Pines