We don’t know what happened after the MC transferred schools, so maybe the ML still loved her but lost his memories after an accident, since he only approached her when his memories of her from years ago returned. And I think he probably cared for the FL, but more like someone who’s always been by his side, not as a true romantic partner. Honestly, that’s the only plot twist I can think of to make the cheating and amnesia make sense, because if not, the whole plot kind of falls apart. I think...
We don’t know what happened after the MC transferred schools, so maybe the ML still loved her but lost his memories after an accident, since he only approached her when his memories of her from years ago returned. And I think he probably cared for the FL, but more like someone who’s always been by his side, not as a true romantic partner. Honestly, that’s the only plot twist I can think of to make the cheating and amnesia make sense, because if not, the whole plot kind of falls apart. I think...