Yea, I've come this far

I figured I'd already licked his dick by mistake a few times, and without thinking about it; it wouldn't be that different to just suck it. I mean, really, I was just licking up pussy juice after all. No big deal there.
I pulled his cock forward and after hesitating for a moment more, lowered my mouth to it. It looked so good covered in juice, slippery... and it had tasted good too...
I opened my mouth and took his cock in, engulfing the head.
Dan's dick sure was big. I had to open wide but I'd done it. Nothing to it really, it wasn't weird or anything. I was just sucking a dick, a dick covererd in my wife's cum. I'd have sucked my own cock if I was flexible enough, as I'd seen guys do in videos on the net; auto-fellatio or something I think it was called. I suspected most guys would do that if they could; hell, they'd probably be doing it all the time. It wasn't that different to be doing it with another guy instead.
The feel of his thick meat stretching my mouth was kind of arousing as I bobbed my head up and down smoothly, trying to clean all the tasty juice off him. I could feel more juice seeping from the end of his dick and as I pulled off the taste of Dan's pre-cum hit me. It was so sweet, just like my wife's cum. No wonder some girls enjoyed sucking cock.

I pulled off and slipped him back inside Melanie, surprised Dan hadn't said anything about me sucking his dick. He'd probably not been able to see and just assumed it was Gina, and my wife had laid back with her eyes closed so hadn't seen anything either. Although I'd enjoyed sucking him and licking his pre-cum, I wasn't going to let him finish in my mouth. Besides, hadn't Gina said his cum tasted bad?