I came up with these two. The guy at the top is the more handsome, and has the better body in my opinion, so he'll be the principal muse. But I like the expression of the other guys face - it's the sort of disdain I'm looking for in my man.
He also has the more impressive equipment - and you need great equipment on a building site - at least on the one I'm writing about you do! For decency sake I have cropped both pictures, but if you want to see what I mean then visit me on Tumblr http://jackbrighton72.tumblr.com/where I'm less inclined to censor.
It's sad but true, again at least for me - when you see them both in a more revealing state it kind of shifts the balance of attraction. The top guy is beautiful, and I'm sure he's great in the sack. Probably he's perfect boyfriend material. But I'd pick the other one for some dirty sex.
Anyway, I'll take the best of both and add my own touches. That will be my sparky, and you can be sure he's going to do one electrifying job when he pops the narrator's cherry.