All logical: he takes off the brunette, she takes off his pants, and they are each engaged in their usual business. The girl, by the way, will go far in the modeling business, where the ability to completely swallow a big cock, while smiling at it, is highly valued. Give a deep blowjob with a friendly face, this is memorable and the next time you choose a model, she will automatically be at the top of the list!
It's the ass that seems to attract the guy the most. Once he's tried it, he won't want to deny himself anal pleasure anymore. A girl has a chance to offer him MJM to fill both holes. And if you offer it to a guy during sex, he'll agree to anything. I'd love to hold on to those little tits and cum on them.
Too bad she's dead.