lol, maybe I should have read the whole thread. I didn't realize he hadn't tried calling her yet.
NZ...definitely try calling. If she doesn't answer, leave a message stating you had fun and would like to see her again, you understand she's traveling, bla bla bla...and to give you a call back when she returns. If she doesn't call you back...move on to the next hottie. 
Laura, if you didnt know already im a dating guru!
he tried calling and texting, no reply on each..you got to move on, his just infatuated by her, the more she doesnt call or reply he will keep falling deeper, pull out now, move in to the next girl..i go on many dates, sometimes i adore the girl, sometimes i dont, the ones i adore i call them a few days later thanking them for a good time, thats if they havent called me to thank me first, which is most cases your in like flynn.
you got to flip the script, if a girl called me and i cant stand her i dont answer, if she msgs, im polite enough to reply to her, but show no interest in my reply..
Guys should follow interest indicators, girls use body language alot, i can read it easily, i seriously only go out with girls that show interest.