From Bandung with Love (2008)

Vega aka Vey, a university student, works as a radio broadcaster and copywriter. She has her own radio show that discusses love, "From Bandung With Love". On one show, she theorizes that 10 out of 11 men are unfaithful. This theory is then confirmed when Wulan, Vega's friend, is cheated by her boyfriend. Vega wants to test her theory on Ryan, a creative director known to be a playboy. Vega gives herself one week before her next radio show to meet Ryan, and gather information from the point of view of unfaithful men. But then Vega falls in love with Ryan as he really knows how to treat a lady, a talent that Dion, Vega's boyfriend, does not have. Soon, Vega realizes that she is the one being unfaithful.