There's Something Strange About This Neighbor

[Modern romance, entertainment industry, sweet pampering, mutual secret crushes] Shen Feiyu debuted through a talent show. After his idol boy group disbanded, he transitioned into acting and became one of the hottest new actors around. Qiao You was a child star who appeared in many hit movies and TV dramas. Now she's a newcomer making her comeback as an actor. They're a perfectly in-sync working duo and one of the most popular actor pairings around. Tens of thousands of people online ship them. But what if the strange person living across the hall is also... her? They live in the same complex, in apartments facing each other. This strange neighbor dresses oddly and acts strangely, yet they keep bumping into each other for no apparent reason. Why does the neighbor feel so familiar? Could this strange neighbor actually be her (him)?