🚨 Spoilers ahead!!! 🚨
1. On Gilmore Girls, when Rory picked up the cornstarch and reminded Dean of the box she shoplifted after their first kiss:
2. On Schitt's Creek, when the Jazzagals sang "Simply the Best" at David and Patrick's wedding, calling back to Patrick serenading David with the song in Season 4:
3. On Brooklyn Nine-Nine, when Jake made a familiar joke about Amy's butt being "the bomb" on their wedding anniversary:
4. On One Tree Hill, when Lucas and Peyton greeted each other after the championship game and called back to their Season 1 banter:
5. Also on One Tree Hill, when Nathan and Haley called back to their "don't say I never gave you anything" catchprase:
6. On New Girl, when Nick sang "(I've Had) The Time Of My Life" to cheer Jess up in Season 1 and then the same song played in the background when he proposed to her in Season 7:
7. On Elite, when Omar and Ander called each other "Andrés and Román," referring back to when they pretended not to know each other at a party to keep their relationship a secret in Season 1:
8. Also on Elite, when Guzmán dropped into Nadia's family's store to "buy asparagus" the way he did in Season 1:
9. And on Elite, when Carla asked Samuel if he would bring macaroni when he visited her, referring back to the meal they shared at his apartment in Season 2:
10. On The O.C., when Ryan did an impression of himself, calling back to the first time he and Marissa met:
11. On Degrassi: The Next Generation, when Eli asked Clare if anyone had ever told her she had pretty eyes, calling back to their first scene together:
12. On Degrassi: Next Class, when Maya's last line was to Zig, paralleling his first line to her:
13. Also on Degrassi: Next Class, at graduation, when Miles and Maya called back to their relationship from seasons earlier:
14. On Riverdale, when they showed Archie "proposing" to Betty as a little kid, the same story he told at the beginning of Season 1:
15. On Ginny & Georgia, when Ginny and Marcus had this perfect parallel:
16. On Wynonna Earp, when Nicole found the couch she and Waverly shared their first kiss on and proposed to Waverly:
17. And finally, on How I Met Your Mother, when Ted showed up to Robin's apartment with the blue French horn in the finale:
