This is just a guess but I think it's Jiha! Teehee...I mean I got shit to back it up as well ;)
Ye it's probably him
╮(￣▽￣)╭ ill let the chapters prove me wrong. but i honestly think its jiha
can u link me a picture for Jiha? I am not good with names. (￣∇￣")
jajaja If you scoll down a bit to the purple haired emo looking dood on there phone that's him xd
http://www.mangago.zone/read-manga/s_flowers/hs/hs_chapter-1/
I'm bad with links sorry
aaaaah, tyty... the ex-boyfriend, of course I can remember him. :D
I feel so sorry for the friend T-T I really want them together, but that will probably not happen, we still dont know who was the person from that special night. ^^