Volley (2014)

Six friends spend New Year's Eve at a house by the river. The host, Nicolas, brings his ex-girlfriend Pilar, with whom he just had a one-night stand, but he hits on every other girl at the party, including the brooding Cata and the voluptuous Belén. When Nicolas unexpectedly falls into bed, and then in love, with the high-strung Manuela--who also happens to be his best friend's girlfriend--the last laugh is on him.