Rent a girlfriend

Honestly how this manga is almost 400 chapters and how is still going is beyond me.
Basicly the main lead Kazuya had a boner in a public pool because he was thinking about the female lead being boned by another man(ch 218 for those that are curious),a fellow actor she knows but which she turned down saying that there is someone she likes(she likes the main lead)
Dropped the manga around this arc because at that point were 0 progression after hundreds of chapters .
Reality check or not i need some kind of progression to happen in story but if there isnt one than is wasted time.
Cuckuya from the first chapter has remained almost the same(except for a few rare sprinkles of rationality here and there) with behaviors bordering parasocial but somehow he had several chances with other girls which were rejected later on(yeah i know is a harem manga so thats expected).
Chizuru is always indecisive about what to do with Cuckuya and when she ghosted the main lead for 3 months because she was starting to feeling something for him was peak stupidity.
All in all both are toxic and not a good couple.
The most recent chapter there seems to be another stalling situation considering how she is not rejecting the dude.
Wish she did so that the male lead could move on but aka this manga is know for this back and forth.
btw This is a tactic that the author has always employed as to milk as much as he can this series since he knows he got lucky.