Wii! Take your right hand and slap yourself across the face, would you???
You're sounding way too needy dear boy. Sometimes "Can I let you know? I'll call you" - just means life is busy and she hasn't figured out a slot for you yet. No need to jump to conclusions - don't be so impatient.
But also - keep talking to other prospects too.
And make sure you get off the computer and get out and have some FUN too!