Quote Originally Posted by TheAbominatrix
Aitrouteru is what you say to 'the one'. My friend and his girlfriend from Osaka say it to eachother all the time, I know the difference.
I only know it 'cause it was in Hana Yori Dango and the translator made a note about it the difference.

I think its so cute that Japanese have a difference between just saying I love you and saying I love you to 'The One!' They should have that in America. D: