Heartsick pain struck unexpectedly as he watched his mother and brother embrace. The past didn't matter in that moment, nothing but the present: they were alive, they were together, they were safe. He ached for it. He wanted it.
But at Nathan's offer, Peter shook his head and turned away. No. It's too much, too soon. Get her back to the Hyperion first.
He wasn't certain whom it was too much for. Him, or her. But the ache still burned in his chest, and he couldn't meet Angela Petrelli when he couldn't control what his response to her would be.