A Sharp Intake

There's a sharp intake of breath, as her lips
First touch the tip and he goes soft to hard;
She slides her hands round undulating hips
And sucks his balls to encourage reward;
The groans of pleasure are but a beginning,
With dirty words brought out, as she delights
In stroking him; it is akin to sinning;
But is it so wicked? For she requites
His need, until his hands rest on her head,
To press her face up close to loins that buck,
His thoughts of gentle love have all but fled;
And he must use her: fill her face with fuck;
She knows those powerful trembles: he's begun
To offer a sharp intake: spurted cum.