I am so sick of guys flirting and then doing nothing---am i missing something?

i keep meeting these guys who flirt and flirt and then invite me to something and then they are sweet and all but then thats it. and i end up thinking-----what is it??? --like did they even like me in the first place? i dress nice and smell nice when i go out--nothing dramatic--but i know i look nice-- and i am nice, i dunno-----what a wierd pattern to be in, these guys are attractive too---they have every reason to be confident. and it;s just consistently a whole lot of flirting and then nothing. hmmm....i am so used to aggressive guys,. ...these guys are kind of clean cut. i have no idea how they operate. hmmmm....... doyou know???