What Should I Do If I Get Stuck with My Yandere Boyfriend?

The most ridiculous thing in the world happened to me. He suddenly turned into my sister's boyfriend and almost made me sick of my overnight meal. I secretly glanced at the suitcase next to the sofa. Are you planning to settle down here? From now on, if you look down every day and don't see you when you look up, what can you do? Nangong Xun and I met unexpectedly in mid-air. For just a moment, I felt uncomfortable and quickly looked away. "This is Yang Le, Xiao Ke's sister. She is two years older than Xiao Ke. You can call her sister after Xiao Ke!" My mother enthusiastically introduced Yang Ke's boyfriend to me. "Sister, nice to meet you." Nangong Xun looked at me and smiled, stretched out his hand, and we pretended to shake hands gently as if we were meeting for the first time. For just a second, I nervously pulled my hand back as if I was electrocuted. He had a calm expression on his face, but I was so nervous that my heart almost jumped out of my chest. I couldn't pretend that we had never known each other. After all, we had only broken up a year ago, and my ex-boyfriend instantly turned into a brother-in-law. It was nothing!