For a show with lots of cussing, violence, and sex, it managed to be so wholesome and sweet! I have so many different opinions about "Love By Chance", though, in general, I liked it a lot.

What I loved about it:
Pete and Ae have such a healthy, innocent relationship! Sometimes they have problems, sometimes jealousies get a little too intense, and sometimes insecurities get in the way of common sense, but they always talk things through. They respect each other, love each other, and effectively become each other's equal partners. I loved watching them go visit each other's families-- it was so adorable! I also loved how Pete learned to communicate directly, and eventually became a stronger, more independent person.
I also liked Can. He was so adorable, feisty, and energetic! He, his sister, and his mother were such hilarious spitfires! And his friend Good was the exact opposite, which only made things funnier!
Also, while many people hated how Can and Tin did not get together in the end, I liked it. Neither of them was emotionally mature enough for a relationship, and it's rare for dramas to depict that sort of reality.
Also, Pond and CheAim had such a healthy, endearing, funny relationship. I loved the scene where Pond told CheAim that she didn't need to feel insecure about being sexually reserved, because he liked her for her and not for being sexy.

What made me uncomfortable:
The actor playing Ae was only 16 during the drama's filming, which made a lot of the scenes where Pete and Ae got intimate a little squicky. There was no nudity, though, and it was easy to fast-forward through the very few sex scenes that were shown.
Tin was a little too pushy around Can, and went straight into creeper territory at times. I guess it's supposed to show how problematic he is as a person, but some of the ways he treated Can came across a little prostitute-y.
Also, when you first meet Pond, he's jerking off. He also is a porn addict. Like, what?

What I hated:
The finale. That whole crappy debacle.
First of all, that rape scene where a high schooler completely takes advantage of his friend's intoxicated older brother, then manipulates him into thinking it was the other was around! What the f*ck were the screenwriters thinking?!
I also hated the whole step-brothers' story line. It could have been done better, but was done so horribly.

In many ways, "Love By Chance" was very progressive and uplifting. At the same time, some problematic, and some downright horrible, things got slipped in. Watching it was a very bittersweet experience, and re-watching it will be better since I'll know which parts to skip.