The Last Kolovsky Playboy: Harlequin comics

Aleksi is the dashing president of a high-end brand; he works hard and lives his life as a playboy. Kate was selected to be his secretary because he thought it would be safe to work with her since she's a little big and not the sharpest one. Knowing this, Kate's kept her secret crush on Aleksi for five long years. One day, Aleksi is involved in a car accident. While Aleksi is away in recovery, his coldhearted mother schemes to take over the company. To fight back against his mother, Aleksi decides to pretend to be engaged to Kate to counter his bad reputation!