I recently fell for a girl I know who lives on the other side of the country. I went to go see her, and we had a good time together, but then she decided to just stop talking to me. It still really upsets me!
A friend of mine also once travelled just as far to see a girl he liked from high school. She promised to meet him somewhere, and then changed her plans when he arrived.
The bottom-line is that distance really sucks, but if you're both honest about it, there's a chance of making something work. Anything is possible! There are certainly plenty of people out there who've travelled more than 3 hours for love.
I know a guy who drove 16 hours (round-trip) almost every weekend to see his girlfriend, although they were in a relationship for a while before distance separated them.
I even know a guy who dropped out of college and moved half-way around the world to be with his girlfriend, who then dumped him a week after he arrived...but they ended up getting back together a year later.