Why would he tell her to stop?
A desire not to be a horrible person? A smidgen of self-control? A determination to clear the lowest rung of human decency? A sense of self-preservation, at the very least?
A 14-year old girl who is that sexually promiscuous is likely dealing with some emotional and/or psychological issues and needs someone to help her develop self-esteem and a sense of her own value as a person. Being treated as a sex toy by an older man is child abuse.
We might also expect that a person who behaves in this manner -and who excuses it by insisting that he is unable to control himself- shouldn't then launch a website and video channel where he spends an inordinate amount of time playing the role of a moral scold. Because, one day, the whole rotten structure might come tumbling down on his head.