Hmm...Interesting.
So she fell in love with him before he started dating her sister...I suppose it'd be a little disheartening to find out that the guy you liked before your sister ever did...Ended up dating your sister. So, I guess I can't quite blame her for taking advantage of the situation (a long-distance relationship that doesn't seem like it'll hold) in order to pursue her own love.
Overall, a pretty interesting read, I must say. I'm extremely curious as to what will happen next for this couple...As much as I would love a sequel, I think this one ended quite nicely as a self-contained story.
Well, I'd definitely welcome a sequel if there was one, though.