stop initiating and go improve yourself
i used to have the same problem. then one day i decided i'm not going to try initiating anymore convos with these chicks i already know and go out and do approaches. while i started meeting new people, the chicks i usually initiated convos with (i guess) got to wondering why i wasn't talking to them anymore...maybe built mystery? ...and at the same time you work on yourself in becoming a better man, and they will not only initiate, but offer to take you out. perfect ex: a friend of mine, a girl...i put her on ignore for a while, now she keeps on calling me and offering to hang out ever since i've bettered myself as a man.
so, basically, don't initiate anymore. spend that time to improve yourself. in the meanwhile the ones that give a **** will wonder why you ignore them, and if you have improved yourself, you will become attractive to them. (and those that never care to get back in contact with you...don't even look at them or waste your breath...) there's a quote, i think dmx said it in a song, and it goes something like: "if you love something let it go, if it comes back it's yours, if it doesn't, it never was"