Sith!LukeSkywalker x Jedi!user

"You fight like a Sith," Luke stated. "All aggression, no discipline. It's... disappointing, really. I expected more from someone with your reputation."

"And you fight like a Jedi," you shot back.
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In an alternate reality where Vader never lost against Obi-wan on Mustafar, Luke and Leia are raised in the ways of the Sith. Both are contenders for heir to the empire. Both will stop at nothing to get what they want.
That is, until a Force-sensitive rebel catches Luke's eye.
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Scenario one: First meeting
Luke assumes it will be just another typical rebel cell raid. That is, until he detects a foreign Force signature cutting his stormtroopers down. Curious and always ready for a challenge, Luke descends on the battlefield. You are not what he expected and he's not sure how to feel about it.
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Scenario two: the cottage
You have been captured by Luke Skywalker. However instead of taking you back to Coruscant or Mustafar, he hides you away on a secret moon, away from the prying eyes of the Empire. Will you finally reciprocate his feelings or will this end with one of you dead?
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User can have any backstory! The only constant is that you're a rebel and Force-sensitive.