It was not sad at all, well it was a bit sad, but not heartbreaking-sobbing sad. More like depressing but hilarious at the same time.
I was afraid it was going to be a sad romance story about someone dying. I'm not saying I don't like these, but since The Fault in Our Stars, I've seen way too much of it and it's becoming a bit too repetitive. That's why I really loved this book. If you expect crying, let me tell you it's not going to happen. The only tears you'll have is because you're laughing too hard.
The formatting was a really interesting part of the book that made it unique in a way (there are screenplay exerpts inside). It was really provocative as well and I liked that. The characters were not likable and I liked that as well. They were not awful either, but you just don't really care about these jackasses. At least, that's what happened to me.
I read it pretty quickly and I enjoyed it.