That dude has always wanted to have sex with that girl. After spying on her for quite some time he breaks into the house knowing that her hubby is at work and finds another girl. He ties her up and puts a ball gag in her mouth to shut her up a bit. He tells her to be a good girl because he only wants to fuck her friend. First he makes these two give him oral sex. Then he keeps a promise and fucks her friend right in front of her.