When someone knocks on your door and says:                 “Hi, my name is Oh Sehun.”                 “45 days from now, we will fall in love.”       A/N: Very much inspired from Ted Mosby's emotional speech on How I Met Your Mother. I've been working on this for months now, and finally it is done. Enjoy it! And leave comments to tell me what you think! Sorry if it's kinda lame...