1. Lyrics/songs - I didn't realize this til now, but when given singers/bands as characters, I expect some songs included in the story. It's through songs that singers express themselves, and it seems fake without them. Good thing that Jay E. Tria did not disappoint! If the lyrics in this book are proof, she can be a good songwriter/poet. I love how the lyrics written supposedly by Trainman members, reflected the emotions of the characters. I just wish that the songs were "listenable" just like those in Maybe Someday by Colleen Hoover.  
2. Characters - I still find this weird but I kind of liked how flawed the characters were. Jill is okay, she's funny and relatable. There were times when I wanted to hug her, but I think there were more times when I wanted to slap her because she's so dense. And hello, ang haba ng hair ni ate girl! Ang dami naming walang boyfriend, ikaw, tatlo ka-loveteam mo? Haha. Next is Kim. I perfectly understand that he needed to break-up with Jill. In fact, I admired him for being brave in making that decision because sometimes, even when you're always together with someone, you just grow apart. But he didn't have to do it in a callous, cold-hearted manner. Especially because he and Jill still work together. Then there's Miki, the always-ready shoulder to cry on. But he's a guy best friend cliché. More on that on my next review. Shinta is such a darling. He's sweet, good-looking, all-around nice guy and funny. But he's abangers. I thought he was always waiting in the wings, just waiting forthe opportunity and he's ready to pounce on Jill. Nino and Son are funny and they are good friends, but one is a womanizer and the other seems childish. So yeah, they are all imperfect. But their flaws also made them realistic and endearing. 
3. Humor/Banter- Although this book had a lot of feels, it wasn't entirely a SOB (Songs of Our Breakup, gets? hehe) story. The characters were funny and I love all the playful banter and sarcasm. Reading their exchanges was like hanging around with my guy friends.
4. Setting- I like how I can picture UP Diliman as their college setting and Saguijo  (I've never been there, but I read Spell Saab a lot.) for Commute bar. 
5. Feels - Damn all those feelings. Jay E. Tria perfectly captured the emotions of someone who's going through a breakup. 
6. Quotable quotes - This one had a lot of heartfelt moments and it translated to beautiful quotes. Below are my favorites because...

This one perfectly sums up why one just have to move on: 

“You don’t really stop loving someone…It’s just that you’re different now from the person you were yesterday. And you can’t go back. Even if you can, why would you want to?”

I also asked a similar question: 

Why don’t they teach that in school? Emotional Safety 101. How to love without losing your sanity. Instead of people running around claiming they feel it, while not knowing what to do with it, how to handle it, how not to break it, how to keep it whole. It’s a terribly dangerous thing in the wrong hands. 

I'm mostly protected by this same thing: 

"You have too much sarcasm in your veins. That protects you.”