Dear.M is light, playful, and has enough touches of classic rom-com tropes to retain the viewer's attention. The characters and their respective story lines were easy to follow, despite multiple overlapping connections with the characters' relationships with each other.

A worthy and commendable performance from Jaehyun! It seems as if he was meant to play the role of Cha Min-ho with how well he portrayed Min-ho's easygoing yet caring personality. Among the characters, it's easy to see that Cha Min-ho feels the most relatable to most college students in real life. He worries about scholarships and making sure he keeps up with his academics while navigating friendships and relationships at the same time. Cha Min-ho is oftentimes dorky and kind of a loser (poor guy can't seem to find relationships that last), but it's what makes him all the more charming.

However, what I appreciated the most about Jaehyun's delivery was how he effectively showcased his emotions through even the most subtle of nonverbal cues -- the scoffs, lingering glances, comedic one-liners, and affectionate gestures (mostly towards best friend Ma Jooa-h). It sets the tone of the story further and gives viewers subtle hints as to how he really feels about the important people in his life.