You must recognize that by choosing to be with your significant other, you are choosing to be with all of their prior actions and behaviors. Some jealousy is natural. And men looking for emotionless non-committal sex will do the same thing in any nightclub, restaurant, sporting event or airport. Men think differently, react differently, and process events and situations differently. Just because he has shown interest in you does not mean that he has forgotten about all the other women in his life.
A person has no reason to be passive-aggressive if they feel safe expressing any anger or insecurity within the relationship.
And these are just a few of the places where singles are hedging their love bets! But along with all the excitement that comes with agreeing to meet up with someone for a date can come some heartbreak too.