Modern cultivator loyal to female lead

Hi I’ve been reading many cultivator storys but I really get annoyed when the Mc says he loves one girl and then just because a pretty girl talks to him or does whatever with him so then she has to become a part of his harem and then girl that he loves in the first place just accepts it. They never get jealous and just becomes sisters. So I was wondering if there’s a novel out there where the Mac stays true and loyal. Or if he cheats the main girl dumps him. Anyone know any novels like that. Preferably a modern xianxia