The first half of Chapter Eleven of the first season. Specifically, every single part that involved Fate. You know something qualifies for this when The Woobie is happy for the first time in an extremely long time.
And in A's, there's how Twilight got her magic back thanks to The Power of Love. Specifically, her family's love was able to restore her Linker Core and her Cutie Mark.
Shamal and Fancy Pants' interactions generally enter into this territory. This is particularly true in Chapter 8 where Fancy Pants informs Shamal that, no matter what secrets she may be hiding from him, he thinks of her as a good and kind pony.
This pays off in Chapter 9, where Shamal's confession of love for Fancy Pants is enough to trigger something inside her, giving her the magical power to not only stabilize Trixie, but give Nyx enough power to wake her up.
And then, in the Epilogue Shamal and Fancy Pants finally share a kiss, having agreed to continue their relationship even if Shamal's off-world.