The sound of feet woke Percy up, although he wasn't exactly sleep in the first place. Sleep was a rare thing for Percy Jackson, and when sleep did come, it lasted for short amounts of time, and was always light, so he didn't blame Annabeth for waking him up. He would have woken up by the wind, or the sound of someone sneaking out before too long, if his nightmares didn't wake him up first. So when Annabeth Chase came to him in the middle of the night his question was not why did you wake me up, but what's wrong. Though he didn't need ask it at all. Because sleep was a rare thing for Annabeth Chase as well, dark thoughts haunted her sleep, and her waking moments as well. And more often than not, Annabeth was awoken by nightmares, nightmares of loosing Percy, nightmares that led her to his cabin in the middle of the night.
Nights like this were becoming more regular, Annabeth sneaking out at well past dark, to make sure Percy was safe, and then staying because she wasn't sure she was. At first, Percy would ask if she wanted to talk about it, and she would shake her head. The two of them would fall into an awkward silence, until Annabeth either decided to return to her cabin, or one of them fell asleep. After awhile though, the silence was more welcoming, and when Annabeth came to Percy in the middle of the night he did not question her, but instead opened his arms for her, silently comforting her until she had calmed down.
Nights like this the two of them clung to each other. Nights like this where they were worried they would loose the other, their grasps on each other more to reassure themselves that the other was safe than to comfort, their kisses rushed, reassuring each other with each breath that they were alive, that they were home, that they were safe.
They leaned on each other, but not because they weren't strong enough to stand alone, but because they were stronger together. Because after everything they'd been through, there was no one stronger than the two of them, and nothing could tear them apart.