So my 4-month-old kitten is in heat for the first time, and since I wasn't expecting it this early she hasn't been spayed yet, but will be as soon as her vet can get it done. Meanwhile though, my 5-year-old male, who has been neutered very young and has never shown urges before, mostly ignores her but sometimes he tries to mount her. They get along great normally so she doesn't seem to reject him at all when this happens; it always ends because I break it up. Since he's been neutered I know there's no danger of her getting pregnant, but is there a chance they would actually mate? As in with all the noise, etc.? Because I don't want that to happen and am keeping her isolated in my room when I can't watch them, but they keep muttering at each other through the door and she's really complaining about being contained. This is a rather basic question, I know, but I have never experienced a cat in heat before and my googling isn't helping with this specifically. Thanks so much in advance!