I want to say I love you

Season 1

Centers on a 39-year-old pharmacist. She lives a peaceful life, doing the job she loves. However, the man she has loved for a long time has gotten engaged to another woman. On her way home from a drinking party with her colleagues, a younger man appears in front of her, and somehow, they start to live together out of the blue. Meanwhile, she meets another man who gives her peace of mind with his honesty and kindness. As she starts to realize the true meaning of happiness and the importance of being loved by someone, something begins to change within her…

(Source: Drama-Otaku)