I don't know this feels wrong. If taeha is 22 then his frontal lobe hasn't fully developed yet. At early twenties you have different kind of passion then yours late twenties. In korean novel they show obsession as romantic love. Not that I'm complaining, it's some that I also like to read, but there should be some kind of development. Not this hot and cold push and pull thing all the time. It's like even if I'm not reading the whole manhwa it's same if I just read two or three chapters I would know what is going on.