Can someone spoil me why jugyeong and seojun breaks up?

Cuz he’ll become a k pop singer and they cannot be in relationships

For his career and her mental health. She was getting a lot of hate on social media for being his gf.

Would it hurt to add spoiler before ┗( T﹏T )┛

The question was if someone could SPOIL the breakup reason so the answers are the SPOILERS by default...