I wrote several times to a girl I got to know online but as soon as I learned that she lived in a far away city, I told her it was better not to e-mail each other any longer due to my inability to go and meet her there.
Did I do right?

It depends if you want more than a pen pal and felt you were getting too attached then it may have been the right thing to do.

I'd say yes you did. You saved both you and her from agony. Long distance relationships are un-natural and just torture.

If you were wanting more than a pen pal then yes, you did right. I speak from experience relationships take work, Long distance relationships take miracles.

There is no "right" or "wrong" on this, you did what you considered best. A long distance relationship is hard and often don't work, Your age, their age and the type of relationship all makes a difference

I think you thought about what you couldn't deal with and that's dating someone that lives far away. Dating is suppose to be about getting to know each other and spending some time together but in this case distance would have played a factor and the road could have been costly and frustrating. I think you figure out that was something you couldn't deal with.

Also, I think that even though nothing would've happen between the two of you if anything you could have gain a new friend but that was your call.

I think you thought about what you couldn't deal with and that's dating someone that lives far away. Dating is suppose to be about getting to know each other and spending some time together but in this case distance would have played a factor and the road could have been costly and frustrating. I think you figure out that was something you couldn't deal with.

Also, I think that even though nothing would've happen between the two of you if anything you could have gain a new friend but that was your call.