As soon as her arms were around him, that was it. It was over. To say it simply: He broke. He clung to Gwen, ignoring the pain that it caused because that mattered so much less than this. He needed the contact to remind him to breathe, to feel. And for awhile, he just stayed like that, half leaned up against the door frame, clinging to her, letting all of what he had bottled up was over him.
He wasn't sure how long they were like that, but after awhile, he was finally breathing in a normal pattern again. And he was incredibly aware of the pain, wincing and letting out a hiss of pain as he pulled away from her.