The relationship between the leads can be seen through this conversation:
ML: "You can either struggle and drown to death, or wait until you can kick yourself back up"
FL: "Are you telling me to drown deeper to the bottom?"
ML: "That's not what I meant. Was that not comforting either? You and I really don't mix well."

A hate to love romance between two really decent people. Both of whom, individually are really loveable but together (at least at the start) clash. They have very ironically and drastically different personalities: the idol is antisocial who seems to hate people in general (excluding fans), a mood in itself, whilst the no name reporter is a social butterfly that is hated by everyone for reporting the truth (at least from her view).

The SL couple: They were in a toxic relationship, not necessarily because it was abusive. The SML loves the SFL and she lives off of him despite the fact that she clearly doesn't love him. I felt bad for the SML for being in love with her and I hated the SFL for using him, his emotions, money and company to make it as an idol. I understood why he was always angry at the SFL when it came to the ML and I hated how the SFL always played innocent with him despite knowing that he knows her better than anyone else.

I LOVED the SML in this drama, despite him first being portrayed as a villain, he was always a really decent person that is always misunderstood by other people. I loved his relationship with the ML and FL, they all made such good friends. The friendship between the ML and SML was beautiful despite them not being friends for the majority of the drama. I hated how the SFL got in the way of the friendship between the two ML's and they both deserved better than the SFL.