Usually if the story ends because the couple finally confessed to each other, it's because the author's understanding of a romantic story is infantile. Dating is hard work and serious effort, and the process itself can create complex stories that are absolutely worth telling. (It has it's faults but Horimiya URL: https://mangadex.org/title/6770/horimiya is an example of this.)
The fact that this story dragged its feet to end at a confession is simply confirmation that this author doesn't know enough about people to tell a story about them.
If you want to see this story written by someone with a more solid understanding of human beings, and are willing to deal with a less extensive art style consider this manga: Yandere Kanojo
https://mangadex.org/title/489/yandere-kanojo
https://mangadex.org/title/23307/yandere-kanojo-online
P.S. the Yan comes from Yankee, as in delinquent, not Yan as in mentally sick, so the Yandere is not the one we are used to.
Basically this is" misunderstanding" the manga. If you don't like misunderstandings, you won't like this one. The romance got pretty dragged out with misunderstandings, and the gag is overused so it got pretty boring. Giving this a 7/10.
overall, a pain to read in a good/bad sort of way. imo should have been shorter to have more focus on side chars and post relationship, that said, it's still a good read, unless you hate plots like this.
Pretty unique plot and a rather slow story phases but it's feels so quick that you're not gonna realize that it's going to end(i finished this manga in one sitting so it's makes sense to me)
The girl was cute but DAM it shouldve ended at chapter 40 it got dragged out so much i liked the star but man just end it it made is so bad 4/10 the girl 8/10 she cute dude just a beta