WHY ARE WE GOING BACKWARDS WE WERE DOING SO GOOD AHHHH (๑•ㅂ•)و✧

Its understandable, when you are where Sehun is in his career its not worth it to risk it all for a relationship that may not be worth it. He is probably trying to judge/test if their relation would be enough for him to put his career on the line. Yunshin in a way has nothing to lose while Sehun has a lot, it is not an equal relationship from the start.