Sideline (2008)

Heli, a business student, decides to post an escort ad on the Internet. Soon she meets her first client Risto, the CEO of a Russian oriented trade company. Risto is more than willing to rent Heli's services for longer than just one night. Later, Heli takes her friends out for a fancy dinner without them knowing of her new secret career. Heli soon realizes that the money earned on the previous night is now playing a role in her present and future life.