lost without you - delta goodrem
Stiles has long since resigned himself to the fact that he can't live without Jackson. As in, when he's not around, Stiles feels permanently on the edge of a minor panic attack. He feels permanently buzzing with nervous energy. He's forever moving, fidgeting, pissing everyone off, even Scott.
And when Jackson is around, it's like a whole different Stiles. As if he has overdosed on Adderall and is half asleep. He calms down, doesn't jump at the slightest noise, just sits, head resting on Jackson's shoulder. And Jackson will rest his head on top of Stiles', and even Scott - as dense as he can be - realises that they're mates. Together for the rest of their lives. He's happy for them, honestly he is. Maybe his happiness is tinged with the slightest bit of sadness or jealousy, that he and Allison aren't able to be like this, but he shoves it to one side. Stiles is happy. Stiles, who he knew had been hiding his unhappiness behind a mask, is happy with Jackson and Scott won't, can't, begrudge him that.
And Danny has noticed a change in Jackson too. Because, without Stiles, Jackson is always looking over his shoulder, paranoid (Danny has no idea why). And with Stiles, Jackson is calm. Friendly and more like the Jackson that Danny remembers from when they were younger. His face creases into a smile every time he sees Stiles, eyes wrinkling at the corners. He's more affectionate with Stiles than he ever was with Lydia. With her, it was about appearance and status. With Stiles, it's about love. And, of that, Danny has no doubt. They love each other.
Jackson can't imagine life without Stiles. Maybe it's the werewolf mating thing, but he can't, doesn't want to, imagine living without Stiles. He'd be aimless, a compass unable to point north. Because Stiles is his anchor, and he's only ever told Stiles that. He thinks of him when he changes, and it helps him keep control.
They balance each other out. That's the only way to put it. Jackson is confident, Stiles isn't. Stiles is brave, Jackson freely admits to being a coward. They balance each other, and some of their attributes mingle, until Stiles is a bit more confident and Jackson is a bit braver.
They know that they'll be together forever; as clichéd as it sounds it's true. Wolves mate for life. When Jackson first found out that he had mated with Stiles, he was shocked to say the least. Stiles first realised that they were mated when he was in the middle of a panic attack. He couldn't breathe and the moment Jackson appeared in front of him, he was able to breathe a little easier. And so now they come as a pair. Like Scott and Allison used to. No one mentions one without mentioning the other.
It scared Jackson at first, the depth of his feelings for Stiles. Derek explained it to him, how it was to be expected. How he was stuck with Stiles. And Stiles, instead of freaking out when Jackson told him, said 'oh' and Jackson just had to kiss him (there really was no other option). And Stiles just kissed back.
And now, in Jackson's room. Stiles turns around, from where he'd been peering at Jackson's trophies, and walks over to where Jackson is sat on the bed. He kneels on the edge of the mattress, knees either side of Jackson's thighs, and cups Jackson's face in his hands. "Hello," he whispers, and Jackson smiles, before pulling Stiles down for a kiss.