A tweet from the EQG staff (now winding down since production on Equestria Girls has ended) reveals that we definitely weren't reading too much into Rollercoaster of Friendship:

Tweet thread here.

Nothing a proud Rarijack shipper did not already know, but the confirmation is lovely.

Today, the gods have truly smiled upon us.

There's a reason why they kept writing them together, and that's because they're just so fun to write together.

Excelent, if only they do the same with TwiDash.

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