dont I don't think there's anything wrong in dating again in fact it takes your mind off Geeky.
But like I said before (and I've had this) you seem so hung up on Geeky it's not helping you move on. You want to hear from him that he doesn't hate you. I don't think he cares (sorry if that's harsh) so he's moved on. You still need affirmation of something, anything from him so you know he cares. If you were over him (I know you're not) you wouldn't care less.
How about maybe his name on bits of paper and burning it maybe with a friend? or does that sound too witch like!
Also I know you don't believe us but one day you'll wake up and think Geeky, Geeky who?! I promise.