Blooper

In the scene where Ryan is filling in as a masseuse, his watch gets stuck in the woman's underarm. He reaches back in to get it with one hand, but as the camera angle changes to show his hand covered in her sweat, the opposite hand is covered. He reaches in again, and pulls the watch out with the opposite hand he reached in with.

When Ryan kisses Jenny wearing the half unbuttoned shirt, when the camera is behind him, his head is tilted to his right, when the shot changes to behind Jenny, his head is tilting to his left, it then goes back to behind Ryan with his head tilting to his right.

When Jenny gets out of her shower to be surprised by Ryan, her top can be clearly seen - very much contradicting their dialogue of her being naked.