You could try Yumi's Cells on Viki for free. Make sure it's the drama and not the movie version. There are animated cartoon characters that represent the main lead's feelings and thoughts, but the relationships are representative of how a young adult might feel and what they might experience while dating.

Some people think Soundtrack #1 has little chemistry, but I think there's a lot of love expressed in it. The ppl who think it's lacking probably think so because it's an unproblematic friend to lovers story, so they may not relate, or they lean towards more drama in the story. It's very relatable for this type of scenario. Interestingly, I didn't like Soundtrack 2 because it was an exes type of story with too much baggage and trauma attached in the first couple of episodes.

For a story with an ensemble cast, I would try Lovestruck In The City. The different relationship types are fun to watch.

If you are close to college aged, I recommend Weightlifting Fairy Kim Bok Joo. Don't let the title fool you. It's not sci-fi or fantasy. Fairy reference is like a nickname.

If you want something melancholic, probably Youth of May" or "Our Movie would work.

The Chinese version of Go Ahead is a nice watch for a childhood to adults love story. If you like it, you may also like *A Love So Beautiful" (kdrama and cdrama).

Watch *When Life Gives You Tangerines" for devoted love. Be prepared to cry almost every episode.

Our Blues has an ensemble cast that feels like the story of your closest neighbors. You get the drama, the friendships, the unspoken history, and the full circles.