I think a lot of us (girls/women) have the idea in their head of a perfect relationship and the perfect time and place to be told that you're loved - it all depends on the girl though. The word 'Love' is thrown around too much thesedays -it's nice if its said spontaneously, not all planned and staged. Just don't rush into saying it because you feel you have to - say it when you truely mean it, and that way, it will be the most special moment in the world to the girl you say it to -wherever you are.
Good Luck!