Husband's friend masturbates and ejaculates

A young guy, who happens to be a friend of the husband, is over at their place. He's feeling a bit horny and decides to take matters into his own hands. He heads to the guest room, where he starts to pleasure himself. His hands move rhythmically up and down his throbbing cock, his breath becoming heavier with each stroke. He's a bit taken aback when he hears footsteps outside the door, but he doesn't stop. The wife, who had been innocently going about her business, is caught off guard by the sounds. Intrigued, she decides to take a look and is met with the sight of the guy pleasuring himself. She's turned on by it and decides to join in. The two of them engage in some steamy sex, while the husband is conveniently out of the room. The guy finally reaches his climax, his hot cum shooting all over his waiting pussy.