Looking for dramas where FL lies she has a boyfriend who is either a famous/popular or some other status and then the lie becomes truth. 

Like in Cheat My Boss, where the FL lies that the Ceo of a company is her boyfriend and when he finds out about it he looks her up and kinda crushes on her the first time they meet. 

  • Don't Lie, Rahee (FL lies about being the ML's - a star athlete - first love which is actually the truth)
  • Wolf Girl and Black Prince (FL lies about being the ML's boyfriend who turns out to be the most popular guy at her school) I recommend the anime more than the movie though!
  • Best Mistake (Season1_ webtoon) - FL lies about having a boyfriend with the school/class popular bad boy to deter a suitor 
  • Lie to Me - FL lies about being married without naming names but gossio snowballed ino her being married to ML (CEO)
  • Adult Trainee (2nd story_ep3-6) - FL lies that she is in a relationship after her ex-BF and best friend drops a bomb of them dating in front of her. So she lies about being in a relationship with ML who is popular and also happens to be her neighbor/childhood friend

I think Her Private Life ihas that plot.