That's all he has to get out before he feels her arousal gushing out of her, and she begin to tighten. A little at first, then more, an increasing set of spasms that end with her completely clenched around him. It's all he needed and he lets his go, filling her completely as he jerks. He wants to clutch her to him, lay her right on top of him while he spends his last, but she's continuing to ride hers. Her hips rock back and forth, quickly, and he realises she's leaning forwards to scrape her clit against him.