Haewon's not so quick to say those three words like Sehun is but he's making a pretty convincing case for himself. 

Using p0ck3tf0x's list of "100 ways to say 'I Love you'" from tumblr. Each chapter could be read as a standalone since there's not really a plot, but it would be nice if you read it all :))) (Side note, they're not in chronological order, so if you're confused, just let me know and I'll clarify)