Thinking about the fact that as Transformers One progressed, especially once it hit the part where it was revealed that Sentinel was a traitor and that the miners were born with cogs, Elita's and D's personalities kind of swapped.
At first D-16 was fairly supportive or Orion, and Elita-1 was not whatsoever. Both felt like Orion was a fool, but while D would somewhat tolerate what they both viewed as Orion's bullshit, Elita absolutely would not.
But as the story of the movie begins to pick up, and D-16 gets dropped with Orion into Sublevel 50, and Elita-1 unvoluntarily joins them on their quest to find the Matrix, there begin to be subtle changes. In Sublevel 50, D-16 shows some resentment for Orion's actions, but like previous times, then is fine with Orion after things start to look up again. And when Elita joins, though at first she is pissed, we start to see her soften up a bit, particularly once they hit the surface of Iacon.
And once they reach the resting place of the Primes and finally reveal the truth, the switch becomes more obvious. D-16 expresses rage regarding Sentinel Prime towards Orion, blowing up on him, even partially blaming him for them finding out about Sentinel's betrayal and their cogs being stolen. But Elita-1 does the opposite, expressing admiration for Orion's previous bullshit (having had gotten them to the cave in the first place), and even sides with him, more willing to do whatever "out of protocol" move he may make to correct Sentinel's wrongs, and even more so complements his moves with her own, sort of like D did.
And by the end of the movie, their places have fully swapped, with Elita standing by Orion, now Optimus, while D-16, now Megatron, is against them (for political reasons), unlike how it used to be D-16 standing with Orion, while Elita is against them (for job position and protocol reasons).
Also, to summarize in a different way, D-16 loses his love for Orion, which he previously held, while Elita-1 gains her love for Orion, which she previously held none. (Whether or not you interpret both or either relationship as romantic or platonic)













