Hiding my affection for a big cock from my boyfriend

I've always been a fan of a big cock, even though my boyfriend doesn't have one. I've been trying to hide my affection for it from him, but it's getting harder and harder. One day, I was at my friend's house and her boyfriend came over with his big ass cock. I couldn't resist the urge to suck on it. I bent over and started giving him a blowjob, my brown eyes filled with lust. My friend joined in, riding him cowgirl style while I continued to suck on his cock. The sight of my big ass and big tits bouncing as I fucked him barefoot drove them wild. My boyfriend walked in on us, but luckily he didn't seem to mind. He even joined in, fucking me from behind as they watched. It was the hottest sex I've ever had.