>>279891401
>But I can’t really blame the author, this is probably just a constraint of working in a magazine aimed at teens.
No it's not. It's just a way for the author to extend the manga endlessly. Mate, it took them almost 200 chapters to kiss for the first time, and then they decided to "take it slow". It has nothing to do with the magazine, it's clearly just not knowing where to take things once they become actually lovey-dovey.