Now I'm no expert, but I've found modern manga tend to show exes, but then only use them for 1 or 2 chapters, then they have them fuck off or make 'em lesbian/gay. So if y'all are thinking of dropping it, well actually go ahead because you clearly don't like it, and you shouldn't read something you don't like, but if you're on the cusp, I would wait for maybe two more chapters and see where it goes.