I love the idea that there’s a formal and informal way to say I love you in a language 
On the note of saying ‘I love you’ in Korean - a lot of BTS fans like using ‘I purple you!’, hence the 
s everywhere on the K-web!
Apparently, it comes from putting ‘purple’ 보라 (bora) and ‘I love you’ 사랑해 (saranghae) together to make 보라해 (borahae)!