She started moving a little faster against him and he growled softly, under his breath. Rigby, for his part, couldn't tell if it was in his head or from her lips, and at the moment, he didn't really care. One hand reached up to cup a breast, thumb flicking out over the nipple, while he murmured softly in her ear. "Serafina," he breathed. "Been too long. You were right, y'know. We needed this."