Threesome / En, to, tresomt (2014)

Siff, a student in sexology, find out her boyfriend Lucas and her close friend Maria is having an affair. Neither of them wants to break it up. As a solution the two women decide to share and sleep with Lucas by turns.

Director : Claus Bjerre
Writers : Lucas Alexander, Claus Bjerre

Stars :
Lucas Alexander, Magnus Bruun, Maria Cordsen

http://www.imdb.com/title/tt3806618/