I've gone through patches where I've felt insecure and self conscious about certain things, that's when I put distance between myself and the people I know, so I'm not viewed as weak, which is what I think of myself when I'm like that. Most people just tell me to view myself as others would, which is great advice, but it's pretty difficult to do considering I'm pretty critical.
i have almost always been the one who had to pursue things however a girl i like just now had done the pursuing in the beginning and now, that i reciprocated she does not know what to do probably because she thought i'd turn her down, but i have not, now shes gone all quiet and i've not heard from her for a while...i have sent her a text to let her know i am still here that i am thinking about her and that if she ever needs to talk then she knows where i am....nothing more i can do...but she is clearly showing emotional distance.
I know how empty you must feel, I've gone through the same deal a few times. I know this most likely won't make you feel any better, but you just have to give it time, and to see what happens. The easiest way to cope with that is to find things to distract yourself with, and use that to pass the time. Good luck though, I know it's tough.