we'd only been dating for a few weeks but we really hit it off and it was fun

he broke it off because im "flirting" with other guys. when he was flirting with other girls too, he didn't see us going anywhere, and he just didnt want to try anymore. and he told his friend it was because i went to a movie with a guy and he picked me up/dropped me off(he thinks he did that but he didnt!!!) and he didn't like that. i just miss being his friend ya know? like i just transfered to this new school so i dont have a whole ton of friends but since we werent really good friends to begin with idk if itd be wierd if i said something. he talks to me at school and we flirt and stuff and he'll stare at me but when i txted him yesterday he never replied so im confused :/ please help me figure out what to do, but then my friend whose known him longer said just ignore him, he always needs attention dont give him attention... but i dont think hes like that and to begin with she didnt like us together and she dosent really like him either so... idk