Sometimes we see the most in people when they break open in front of us.
These are the times that the strong people cried.
Luke and Mara, pre relationship, sometimes letting their guards down together.
'You won't be frightened with me, Mara. I won't have you whimpering on my table and have to wonder if it's with passion or fear. I won't bring you to harm. But that doesn't mean I won't push you. Whatever you got from those cantina cretins will come to seem like child's play compared to what we do in these rooms. That is why you must choose this. The power is yours, until you give it to me.'
AKA, Luke uses sex to save the damsel in distress. What could possibly go wrong?