So uh yeah, they came due to the friction of each other's cock. That's frotage. It's common among homosexuals. But wait, they are in a pussy! Yup and SHE might have enjoyed it but those two used her pussy as a cock sleeve because the nerve endings for men are focused where they rubbed up against each other. Lol.
I have done this with 2 different white couples, one was DPP hubby and I would cum deep in his wife pussy, the other was douple Anal with same result i loved both double anal is best