Alfie (2004) on Netflix

Alfie is quite the ladies man and rarely gets rejected when it comes to the opposite sex. He successfully has relations with multiple women without a hint of emotional attachment. A major (lifelong) problem arises when he sleeps with the wrong woman, namely his best friend's (and future business partner) ex-girlfriend. As a result, his life slowly comes into focus and he begins to appreciate the little things he always missed in the opposite sex. A must see for all guys who call themselves "players".