“What do you need from me?”
She gave him a gentle, relieved smile. “The last thing I want is to put you in an awkward position. If there’s someone else?”
“There’s not.” The words spilled out of his mouth too quickly. He ought to have held back and pretended to consider, but he didn’t want to lie to her. The closest thing he had to someone else was the same man Leia spent the rest of her time arguing with, but if Han was tight-lipped about how he might feel about Leia, he was as silent as cold space about reciprocating anything Luke felt. Han was about actions: swooping in to save Luke’s butt, or embracing him like the missing part of his soul. His words were all sarcasm and distance, never opening himself up in case he got hurt, and Luke had learned to live with that.
Leia’s eyes took him in for a long moment. He wondered if Leia saw the words he didn’t say. Then she nodded, to him or to herself.
Source: Hesperocallis, by ambiguously – Star Wars Original Trilogy [Archive of Our Own]
Adult, canon-divergence. Leia and Luke get engaged for morale purposes. Lovely Luke POV.