From Evil Flowers: h4b54
Shin Soon-Ae has the perfect boyfriend in the eyes of her peers. He’s handsome, is in a band and loves her. One problem though- she doesn’t love him. One day, a boy appears and wants to board with her family as a student, and Shin Soon-Ae finds herself attracted to the boarding student. To complicate things, the boarding student seems to have strange mysteries of his own.
BACKGROUND: Dulcinea is a reference to Don Quixote, a Spanish novel about a man who is in love with a woman, Dulcinea. It also happens to be the name of the band Shin Soon-Ae’s boyfriend is a part of.
6 Volumes (Complete)

Selfish, immature, knows nothing about relationships and add acting still as an innocent while being a cunning piece of sh*t
I like the idea that
while dating her boyfriend, she falls for another guy and dumps him. Then later regrets her decision because while she had an attraction to the 2nd guy, she realized she was still in love with her ex.
What I didn't like
the only time travel thing. It seemed out of place in this manwha. She does it and still fucks up trying to fix her relationship with her ex even though she's dating the second guy. It turns out that her ex dies and there's no way to save him, so instead she uses the time watch to jump to another timeline where he doesn't die before she met him and basically goes to make him fall in love with her again. (I did like that part though). Another thing was the second guy (who was a time traveler) fell for the MC, but then it shows he was doing all this for another girl in the future. He dies, but achieves his goal.
shoot i read another crappy female lead manhwa this week plus on top of it i have been sick and these stories just added more of the headache
the loser type female lead thats a Pig crazy for food, sleeps, no grades, goes for the looks of the guys and throw herself on the guy even though he has no interest in her, specially when she already has a boyfriend!
dumps the boyfriend gets together with the other guy gets jealous of her friend and ex together and wants to be with him... whats that all about i hate these shit of story and then the last volume ok i dont even know why i read it all ... im going to try and sleep before i vomit im not feeling good.
... Last updated 12 years ago
This manhwa is actually one of the few manhwas I read untill the end by Hwang Mi-Ri. It was so beautiful, yet so sad (I wasn't expecting the ending because I didn't see the tragedy mark T.T)