This troper had a fairly epic one, with variations, that went something like: girl sees boy in play, girl pines for a bit and then decides she'd better forget it, girl actually meets boy through random coincidence, girl and boy hit it off, boy just wants to fool around but girl actually likes boy and thus squashes the idea, boy gets over it, girl gets over it, boy sends mixed signals, girl decides ''she'' wants to fool around but doesn't want a relationship, ''boy'' actually likes girl and thus squashes the idea, girl gets over it, boy gets a girlfriend, girl tries to date other guys but realizes she does like boy, but by the time she manages to say anything about it, boy is totally committed to his girlfriend, girl gets over it ''again'', and nothing ever actually happens. (And all the while
narrative causality is throwing every rom-com cliche in its power at them, to no avail.)