rahvin...
I'd beg to differ.  My best friend, closest confidant, & (most likely) future wife is someone that lives across the country from me.  Met initially by happenstance via e-mail, then moved to phone calls.  This summer I flew out & spent a week with her & her family.  It was exactly like we expected.  Other than the two minutes of "OMFG I can't believe they're really here" that are practically inevitable, it was like we'd been around each other forever.
How well you know somone depends not on the distance, but on the time & effort invested in the relationship, & the honesty of the parties involved.
Viper GTS