This is just a note that i found funny, or interisting up until ep03, i need to write it down rather than flood it in comment section.

1. You-Jin and Min-Jae have different time when they interested to each other.

You-Jin started interested to Min-Jae since their first meeting, when she accidentally fall by herself. Later at florist when they accidentally met again, Min-Jae never notice her, its You-Jin that notice him and look around the trail of him.

Its no problem for Min-Jae to set date for You-Jin with one of his friend, because he didnt interest at all with her.

His feeling to her developed after their first kiss.

2. You-Jin is emotional person.

She maybe not admitted it, she maybe not easily get angry, but just easily upset. She never can hide her emotion, especially her upset expression.

Some of her decision usually is her impulsive behavior.


3. Min-Jae mistaken You-Jin as she is somewhat genius.

The idea came from math professor, when Min-Jae and his ME professor asked math professor's opinion about You-Jin's entry test result.
The word genius actually came from his ME professor, he just jumped to different conclusion because math proff was impressed with You-Jin's test result. Math prof himself never put any word to describe her.
Later Min-Jae try to comfort You-Jin that math prof consider her as genius. But when they confront the math prof, he never said that she is genius.

The math professor himself just refer You-Jin as talented and different (in positive meaning).

4. You-Jin and math prof have met before.

When Min-Jae and You-Jin together visiting the math prof, to have his evaluation about You-Jin's test result, the math prof said that he and You-Jin have met before.

You-Jin instantly deny his statement.

The math prof was right, they have met before, in an art gallery, i don't know if it still inside university complex or public art gallery outside the complex. Their first meeting happened after You-Jin clashed with her professor.

During You-Jin first meeting with math prof, he politely remind her that it is forbidden to eat inside the gallery.

5. You-Jin is competitive person, even in dating.

The first comment came from You-Jin's ex professor from clothing department, although she never clearly stated that You-Jin like competing, but we can deduct that You-Jin is somewhat competitive person.

When Chacha asked Min-Jae to wear headband, You-Jin saw him refuse it, so she want to win over Chacha by having Min-Jae to wear headband.

i think she is upset not because Min-Jae refused her headband, but more because she failed to win over Chacha.

ps:
When Chacha asked Min-Jae to wear headband, he throw it to the ground.
Different reaction to You-Jin's attempt.

5. Se-Jin, the annoying new guy, likes to eavesdrop.

When he said he accidentally heard a rumour in restroom, about funding, he probably intentionally eavesdrop it.

Later, when they are at amusement park, when the group talked about Min-Jae & Chacha relationship, He reposition his body closer to the speaker. More of it, Se-Jin's gesture is about to eavesdrop their talk, funnily Se-Jin is actually involved in the conversation.
Its weird habit of him.

sure she have jealousy feelings.

its mixed of jealous, and being competitive, but i believe its her competitive side that made her to act. Her jealous feeling usually made her badmood, folding her face, thinking something she can't speak to anyone.

same thing happened again when she thought Min-Jae dating married woman. She made move when their friends setting up "accidental meeting" to make Min-Jae meet a female.

either she didnt want to lose to the married woman, or the possibly new female.