How many movies have Gregor Arnold and Stephan Luca collaborated on?

They have worked on 3 movies together! Their first movie together was Liebe verlernt man nicht (2009) while their highest rated movie together was Kann denn Liebe Sünde sein? (2011). They have not worked together since The Last Hope: U-Boat 864 (2011). They are most known for their tv movie films together.