Taemin went to SM and had a talk with the president, their managers. Taemin told them that he is dating Nauen but would like to keep everything a secret to the public. As WGM created a lot of hate to Nauen, he doesn't want that to ever happen again.  He requested from the managers and the President to help him keep it as quiet as possible. Their family, members, friends and managers already knew.  Taemin wants anything pertaining to Nauen be avoided, prohibited in all interviews, variety show, radio shows.  They would act as if they are strangers in front of the camera and the public.  They would not acknowledge one another.
He asked the President for help with Acube's president so they would do the same for Nauen.
SM : No need, i have already discussed this with Acube before you two started WGM. I will just need to remind him.
Taemin : Sir, what? You knew that i would be paired off with Nauen.
SM : Yes.
Taemin looked puzzled.
SM : Ask your manager for the details. He was in on it from the start.  Now… how about we discuss your solo album.
Taemin : I will talk with him.
SM : You will need to fly to US and meet with an American choreographer Ian for your title song. You will spend a month there to learn the choreography and film the music video. I will do everything i can to block your relationship from the public and the media but you both need to be discreet too.  If you need anything else?  Call my secretary.  You will be our first to go solo from a group so i hope you would not disappoint me.
Taemin : I won't.
SM : i know.  You never did, ever since your audition.  That is why i accommodated everything in regards