I get covered in semen after receiving a massive cumshot on my body

I was out on a date with my girlfriend when she got called into work, so I waited for her outside the restaurant. A few minutes later, a guy in a car pulled up and started talking to me. He was boasting about how big his cock was, and I couldn't help but get a little excited. When my girlfriend came out, the guy offered her some money to let him fuck her, and she agreed. I was left alone in the parking lot, feeling a mix of anger and arousal. When my girlfriend finally came back, she was covered in cum, including on her face, tits, and ass. I couldn't believe it, but I was turned on by the sight. She told me that she had gotten a massive cumshot all over her body, and I could feel the excitement building inside me.