movie title, anyone?

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this movie stars antonio banderas. it's a comedy. i tried to search for Antonio Banderas's movies on google but can't seem to make out the title. Sigh! I could recall the movie plays his role as a guy who pretends to have a twin. That's all i could recall about it. Then he is dating a girl & all along the girl thought he really has a twin. If anyone knows the title, pls tell me :) Just feel like watching the movie again. i have watched other movies before, i have forgotten the titles & i would love watching them again. :)