Stranger fuck! Dirty boyfriend of my cousin?

I had a visit from my cousin and her boyfriend, she had just turned 18 and is extremely shy. I was sunbathing on the terrace in the nice weather and as I was applying sun cream, her boyfriend suddenly stood in front of me. He had already been watching me and I could already see him getting a hard-on. I seized the opportunity straight away, took off my bikini in front of him and took his hard cock in my mouth! When I asked him if he'd ever had sex with my cousin, he shyly said no. Just the thought of him fucking me in front of her made me extremely horny. I really rode him off, he took me doggy, he had a lot of pressure on the young man if my cousin didn't let him go.... Would you have preferred me horny bitch than to wait for my uptight cousin?