[It's okay, if she can't manage it he will. He will smile for her as long as he can, because that is what you do. You smile and you remember and you hope that it won't be the darkest timeline, that there's still something that can be done.
And if there isn't... you keep smiling.
He hesitates for just a moment, because they're not friends like that. Sure, they kissed that one time, but it wouldn't have happened organically and nothing else happened since then. But she might be gone tomorrow. He doesn't know. This could be the last time they see each other, and you don't get any second chances when it's the last time.
Still smiling (more to keep himself from tearing up than anything else) Aidan steps in closer. Makes a move to pull her into a hug, if she'll let him. He's really hoping she'll let him.]