Fluffy romance.
So glad ML is a nice guy. If he's a bad guy he would be really scary, that combination of hotness with douche. Perfect man.
MC was pathetic-looking the first few ep, I think because the author just want to emphasize/ exaggerate her situation, but she becomes better fast enough, and we learn the backstory to her situation. Coming to the wedding is a bit illogical imo, but serves as a meeting point with ML. Her mental state was still in a slump ig at that point.
MC is not petty, she was more trying to move on with her life without any connection to the ex. The ex instead was the douche who harrassed her.
Daytime Star