i wouldnt exactly call that a relationship. If you are with a person for that long then it must be for a reason otherwise its waste of time. My ex we could talk on the phone for hours...but given the fact that we rarely did actaully talk on the phone because of her parents...but i dont see why not if you actually have things in common it would be so hard to speak on the phone. not that thats all you should do but it shouldnt be impossible.

like tony said if u like the girl you sould be willing to talk to her if u cant see her.