Crowley is nervous, but certainly not averse, and also trying not to show his nerves. He leans back on one arm to give Rhea'li better access. Temptation resoundingly successful, he'd say.

When his trousers are unfastened, he shifts himself to help pull them down, because what is revealed is... a swollen, lightly scaled slit. "They're, er. Inside," he manages, slightly breathlessly. A pair of hemipenes covered in somewhat soft cartilage spikes.