😋I recommend a novel to you, it's called 'Secret Marriage and Pregnant Love: Mr. Kan, Please advise!' It's a modern romance novel about urban life. It fits the plot you described. The female protagonist, Song Xinchen, was the assistant of the male protagonist, Kan Yanzhi. She had always had a crush on him and accidentally got pregnant. The male protagonist had a fiancée in name, but with the help of the female protagonist, the two gradually fell in love and finally stayed together. I hope you like this fairy's recommendation. Muah ~😗