Sakura has always been sure.
Maybe she didn't show it. Maybe, every time Naruto made a pass at her in public, it was received with a furious blush, and an attempt at violence. But inside, inside she knew. She knew who cared for her, and it wasn't just the one she showed. Who had pushed her to do what she was proud of, just so she could feel useful. Who did something that could get himself killed, so she could see his Sakura-chan happy. Who'd helped that same Sakura-chan, much changed much stronger, but who still cried afterwards, drag Sasu-bastard home.
Sakura hated that name. When Naruto had been drinking too much (and that meant far too much, because it took a lot to make him drunk, A LOT.), and his hands strayed to the medic sash around his fellow jounin's waist, he would slur his words, and call Sakura that juvenile nickname again and throw insults at Sasuke (though, she had her doubts that it wasn't just a secret macho I-love-you code.). She wasn't even sure why the jounin liked to call her it. I mean, she was pretty sure Naruto knew it pissed her off, so why did he use it? Mind you, he did a lot of things that pissed her off. Like making passes at her in public. Noone else knew. Noone else was supposed to know! Noone could know…
But right now, she didn't care.
Right now, as they wandered into the park, and up into the flat they shared, too small for three jounin, too small for a demon a traitor and a girl who'd got mixed up in it all, too small for all those issues under the same roof, all that mattered was Sasuke's dark eyes watching Naruto's warm hands on her skin, his cool touch to the small of her back and Naruto's neck, all that mattered was the promise of intimacy, the promise of sex was good, but it was afterwards, when Naruto had to be touching them both, a too-warm blanket that meant all others were discarded, when Sasuke was too tired to stop them snuggling into him, and when, if Sakura waited a little for the others to sleep first, their breaths synchronised and she could feel hers doing it too..
and if she cried a little well then that was just proof she was still Sakura-chan after all.