Is it me or has the tone kinda shifted? Mok-yeon's character seems really different now. A...

Is it me or has the tone kinda shifted? Mok-yeon's character seems really different now. And I get it, he fell madly in love, made a mistake, thought he had lost the love of his life and now has another chance. And we know he is mentally weak so he does not cope well with anything. Yes ok. But the essence of who he was seems to have completely vanished and now I find him, dare I say it, really really cringy. Not just him, the whole thing. Feel free to bully some sense into me if you think I'm wrong