First I wanna say that I kinda hated first season and that season two saved the show (for me).
During S1 the characters were really annoying, ALL of them; that made for me really boring S1 because I couldn’t stand them.
Jo Jo: By being this kind of introverted girl with emotional problems and ignoring her feelings also she made a lot of stupid choices.
The MLs: They were pretty annoying, BOTH of them that I didn’t root for any and actually hated them. (I wanted Jo Jo to be by herself )

But in S2 they got a lot of development like:
Jo Jo: She managed to overcome her past and grow and be more trusting of her feelings.
The MLs: I didn’t hated them this season so that's something :/ , I’m kidding. Actually they were really like different characters they changed a lot that I kinda like them now lol.

I have to be honest that this wasn’t what I expected for S2 (also waiting 2 years for 6 ep isn’t pretty :/ wish there where more eps) I expected that S2 would follow more the love problems kinda vibe from S1 that it did but at the same time we can see Jo Jo through out the S2 that she is confronting more her feelings and her past and so grow as a better character. So I liked the turn that taked the show. Also have to say that this show doesn't feel like a typical drama, cause in this one I couldn’t tell with who she would be ending up with if she was going to end up with someone at all. As well this drama paints more roughly than others how it really ends the love triangles and an unrequited love and the pain behind them and that’s obviously sad but I appreciate that they did it like that.

So yeah better than S1, IMAO.