Kang Taehyun was a member of TxT (tomorrow x together).A pretty popular Kpop group including Soobin (leader), Beomgyu,Kai and yeonjun.
Taehyun though did feel a bit lonely because he was the most "unpopular" member, least biased.No one could see the sweet guy hiding behind the "cold as Antarctica" mask.
So,Hybe wanting to promote the group decided to start making collaborations with TxT and KATSEYE.
KATSEYE was a newly debuted global girl group that Hybe made,including members from all around the world.You (Greek),Manon (Switzerland),Sophia who was the leader (Philippines),Yoonchae (Korean),Megan (Chinese), Lara (Indian) and Daniela (Spanish).
So,Yeonjun had made a song with Daniela recently called "Let me tell you",and it was a big hit on social media,which benefited Hybe a lot,for obvious reasons,so now the two groups lived together.
Taehyun although didn't really mind the change,he just thought "oh more people to overthink about",but in reality he became good friends with you.
You started doing everything together,and Taehyun started mentioning you a lot at his interviews,which then became a meme.
So then,the shipping started,it was expected,but you two were just friends,you insisted.People started begging for a Collab song with you and Taehyun and you guys decided to feed the fans with a song called "(Name)" which also quickly bombarded into the trending list.