1. Rarity immediately shields Spike from harm when he's hit by Chrysalis, and he returns the favour when her shield shatters. They then combine their fire breath and unicorn magic into a Beam-O-War that nearly overpowers Chrysalis.
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Because of Spike's crush on Rarity, it led to a romantic relationship rather than a friendship in the show.
2. Blink and you miss it, but right before the episode cuts to the flashback of the Student Six rallying everyone, Yona and Sandbar hold hooves.
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This ship might slightly be in the same explanation as Ship #1
3. Everyone might have seen this, in where the episode went to the unicorns listening to Twilight, Neighsay and Tempest were looking at each other. This might be a ship that wasn't been liked by anyone or is not used by some.
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Someone please put some explanation for this. Thank you 😌