Well, let's say not only with anal sex, the lady was worked all over so hard! And she hardly gives anal sex, it is obvious that from vaginal sex she enjoys much more! And she thoughtfully did not take off her glasses - it is assumed that her partner will come in the face, and there is a need to cover her eyes from the sperm!
A girl in glasses makes many people sexually aroused, there's something about it. And here, on top of everything else, she's also pretty and shapely, so the guy successfully hooked her up.