She soon found herself pinned beneath him, with her long legs wrapped around his waist. She squirmed a bit and moaned softly in anticipation, feeling him pressed against her entrance. "J-just...do it already!"
He smiled slightly and pressed his lips again the impatient woman's mouth, much more receptive to the kiss than he had been last time. He certainly wasn't resisting anymore, and was in fact just as hungry for GLaDOS's taste as she was for his.
Almost as soon as he pulled away from the kiss, he slipped himself inside her dripping wet opening. She gasped and let out an extremely loud moan, almost screaming, as she squeezed her eyes shut. She dug her nails into his back, arching up to meet each of his thrusts.
"Ah..! G-GLaDOS..!" The naturally shy man's moans didn't get nearly as loud as hers were, but they were still more than loud enough for her to enjoy the sound. She kissed and bit at his neck, frequently moaning against his skin as he slammed into her.
She gasped and moaned continually, feeling his body grind roughly against her tender clit while he filled her up. She could hardly believe that she'd never thought to try it sooner.
She grabbed a handful of his hair and roughly pulled him into another deep kiss, taking the chance to thoroughly explore his mouth. As soon as they broke the kiss, he was gasping in her ear. "Ah...! I-I'm gonna- Ahhh...!"
Before he could even finish his attempt at speaking, she was already letting out a scream of pleasure, feeling herself contract around him. Her sounds were practically loud enough to shake the entire facilities, and they were more than enough to push him over the edge.
He soon rolled off of her, laying beside her on the tile floor as he gasped for breath. The reality of what had just happened was only then starting to sink in. He had really just gotten extremely intimate with GLaDOS. Not only that, but he had enjoyed it.
She curled up against his side, completely speechless for once. She was also a bit shocked by the reality of what had just happened. She hadn't been expecting to lose control like that; she was far too vulnerable for comfort. After taking a moment to catch her own breath, she finally spoke. "I...should go..."
She started to sit up, reaching for her labcoat, but he wrapped his arms around her waist and pulled her back against him. "Wait..! Maybe...you could just...stay here...?"
She let herself fall back against him with a small sigh. She rolled her eyes, doing her best to look like she really didn't want to stay. "Under one condition. I have some more tests I need to run tomorrow night..."