what is that spanish movie of a girl riding on a bike and theres this big hot guy...

[Brianna]

...sitting behind her? i remember watching the movie trailer on youtube a while back but i cant figure out the name of the movie. i think its spanish but there's this girl riding on a bike and there's this big hot guy sitting right behind her while they ride. the girl was addicted to sex or something like that. and then another scene in the trailer is that they were both in this night club. and then a different scene was of the two of them standing in front of a mirror naked looking at their reflections. i don't know if this is of much help but any possible title would help