My girlfriend's first time with a sex machine leads to explosive cumshot

After a long day at work, I was eager to show my girlfriend the new sex machine I'd picked up. She was intrigued and excited to give it a try. I stripped down to my boxers, revealing my impressive tool, and strapped on the monster cock dildo. She was amazed by its size and couldn't wait to feel it inside her. I guided her through the process, making sure she was comfortable and ready for the ride. As she mounted the machine, her eyes widened in anticipation. The machine thrust the dildo deep into her, stretching her to her limits. She moaned in pleasure, her body writhing with each thrust. The sight of her enjoying the ride was too much for me, and I soon found myself stroking my own cock, ready to cum. In a fit of passion, I came hard, covering her back with my hot load. It was the perfect end to our first session with the machine.