It's not bad that he dated and seriously liked his ex, but I don't think he really likes our FL now. Maybe he is the one being swayed by her feelings after all.
I really, really hope that her decision to interfere with her execution would not catch up in the future chapters. Let's end that btch girl's arc here, please.
Thank you for the translation. I'm also reading this in Webtoon app as a support for the artist :D