Why did k-moon and popkun break up?

According to many netizens, the reason is: K-moon strongly married Popkun's sister (or his girlfriend), and his behavior disgusted the insiders to the extreme, so he was banned by the Korean street dance circle and had to retire to teach somewhere. It is said that a burst solo was posted on youtube later, but it was also deleted in a short time. K-moon deserved it. Therefore, you can't break the law rashly because you have good industry skills.