Revealing mistake: In the scene where Josh Duhamel and Julianne Hough are in the row boat, it starts to rain so they rush to shore. They huddle under a tree and you can see behind them that the rain is only falling right around them - only slightly further away on the lake there are no rain drops hitting the water.
Continuity mistake: Josh Duhamel is wearing a light/white shirt when he gets wet in the rain with Julianne Hough. They get picked up by a friend and driven home. When Josh gets home, he immediately goes into Noah Lomax's bedroom and Josh is suddenly wearing a light blue pull over T-shirt.