Thank god he'd been able to start suppressing Rogue's ability. The arms around his neck were sudden and unexpected, making Peter flinch for a moment, until he let a thin telekinetic barrierrise up from his skin, shielding her from any effects of it.
He recovered quickly enough to laugh as she stepped back, though the reaction was soundless. Before answering her question, it was his turn. Peter wrapped his arms around her and spun, lifting her off her feet for three rotations before settling her back down and returning the smile.
[Seems like it's everyone. Even animals. I've seen a few theories about it so far, but nothing conclusive.]