She spies on her and then she wants to fuck herself
Exercising is the excuse that girls have today to make guys look at them. And obviously, it is one more tool that they have found and of course, they are going to exploit it as much as they can. Or until it works. The same thing we are seeing right now. Since the young girl never tires of showing off and when she knows that this guy is spying on her, then she wants to fuck herself. Because he has done everything to make his cock hard. Now that she has achieved it, she wants to make money by putting it inside her pussy.