寝取られ漫画のクズ男に転生したはずがヒロインが寄ってくる件

I suddenly remembered. This world is the world of an erotic manga, and that I was reincarnated as the scumbag who is supposed to steal the heroine in this world. Well, I don't have such a hobby, so I thought the heroine should get along with the protagonist. But why are you paying attention to me, heroine? (Source: Gangan Online, translated)