I have experienced a few Internet relationships myself in years past. I can honestly say the only time I felt in 'love' was before I met or phoned the guy. After that I generally lost interest, or his wife called me to tell me he wasn't quite what he'd represented himself to be, or something else along those lines happened.
These days I like to thing I'm a bit less naive. I would say, for me at least, it's easier to feel love when one is not confronted with physical, day to day issues that couples deal with.
I do have many friends online that I'll likely never meet. And I do have many that I feel 'love' for as one loves a close friend. One friend in particular that, although we don't communicate often anymore, I feel a strong connection with and probably always will. (I do miss him, but I understand the tenuousness of online friendships.) If your relationship turns out like that, in my opinion you haven't lost anything.
Like others have said I feel it's important to meet in person before you make any promises/commitments to one another. And be careful. Your heart is involved. And of course, enjoy yourself, which is the whole point I suppose.