Well, if you're a bundle of loveliness like Crumpet (I've met her in person), then it's not too hard, but if you're a beer-bellied old fart like me it takes a bit of effort.
Having said that, I developed a relationship with a woman in Florida. Although we have never met, and probably never will, we have corresponded by email every week for the past 8 years and I consider her a very close friend.
Dean.