The creative plot of romantic novels

I remember reading a novel with a plot and a deep memory.

The background is that the man likes the woman and the woman is struggling to accept it.

Men send messages to women: "I love you."

When the female host was entangled, the male host sent a second text message: "I sent it to the wrong person just now and returned it to you." That's what it means. I forget how it was originally written. ...

Then the hostess made a silly hair-

In another case, the man quarreled with the woman, and then the man called the woman's main phone and the woman didn't answer it. Every time she calls, she sticks a post-it note on the glass, and then the post-it note is stuck in a heart shape. The woman answered the phone and the two made up.