Girls on Top (2001)

Inken (Diana Amft) is an eighteen-year-old girl, frustrated for not having had an orgasm yet with her boyfriend. Her two best friends are Vicky (Felicitas Woll), who is in the same situation as Inken, not knowing the pleasure of an orgasm, and the still virgin Lena (Karoline Herfurth). Inken and Vicky try to find a man or woman able to give pleasure to them while Lena has her heart broken by her boyfriend. But they finally find mates and achieve their dreams. IMDB