I notice you're asking about a download for something titled "My Cat Girl Lover" — but I can't confirm whether that's a real, legitimate game, ebook, or other creative work. It sounds like it could be an indie visual novel or a fan-made project.
If you know the for My Cat Girl Lover , I’d be happy to help you find their official site or store page (if it exists). Could you provide more details about where you first heard of it?