I enjoyed this little short, and I'd recommend it for a quick light read. I've read a few books with this story-line and it is a personal favorite, I think the author did a good job of getting the progression of emotions right. Of course the 'I love you' is a bit rushed, even given that they're BFF's. The story needed to take place over such a short time period to justify their 'practicing' for the porn shoot the next week, but that did make things seem a little rushed.
It worked well that we only got Zach's POV, and he was the one having more of an identity crisis over the whole thing. Getting Larry's side of the story also would have been too much in only 39 pages. The sexy bits we saw were steamy, although I actually could have used a little more. Once Zach realized he had feelings for Larry, I would have liked some slower and more detailed sex-scenes, including the first BJ! I'm kinda bummed we missed that.
And I'd be remiss if I forgot to mention the humor. I love that their friendship and the way they dealt with each other and bantered stayed the same. Nothing better than calling your lover a 'fuck-wit' while still buried inside them.