Unlike the previous reviewer, apparently, I actually paid some attention (Emma is a doctor, not a nurse), and found the premise, though not what was promised, which has nothing to do with the film's direction but with idiot marketing people, was funny and believable. I liked Emma and I liked the very frank depiction of sex. In the cinema in which I saw it, there were very frequently people laughing out loud, and I was one of them. I actually liked that it was longer than an average rom-com, as the story was engaging and I was happy to watch more.
The supporting cast was very good, though I found the father's character a bit charicatured. Overall, a really enjoyable laugh-out-loud comedy that I would definitely recommend, though not to anyone who is squeamish about sex, as it was very frank.