I've been seeing this guy for 6 months now. He's makes me happier than anyone else ever has. But he's a total flirt (and oblivious to the fact). I constantly fear that he may find someone better or might cheat. He reassures me all the time that he never would because he knows how it feels (his ex wife cheated on him while he was deployed). But I l can't shake the fear that he might cheat. And I feel its pushing us apart.