'he was bursting with the same careless vitality as stella and as the dance came to a finish , she threw up her hands , and let herself fall , with perfect trust , straight backwards into his waiting arms he embraced her with shameless intimacy , letting his hands run over her boyish little torso and then kissing her tenderly on the mouth but this was done without a particle of theatricality indeed , i do n't think he saw anyone in the room save for her .