Our Friday round-up of movies finds a strange mix of choices. A new movie, based on a book by Nicholas Sparks, delivers a similar setup to one of his more famous works, “The Notebook.” It’s called The Longest Ride. It’s a love story divided between the present and the 1940’s. There’s also the directorial debut of actor Ryan Gosling, called “Lost River.” It’s an indie film about a single mother, played by Christina Hendricks, who runs up against the criminal underworld, while her son discovers a secret underwater town. And the best reviewed film of the bunch is “Ex Machina,” an intelligent sci-fi thriller about artificial intelligence, from the writer of 28 Days Later.