Dating lower social class
Often, these strategies are variations of going with the flow and taking things as they come. Isabelle, for example, is the daughter of a farmer and a bartender.
In fact, it’s usually not until meeting their in-laws that the couples themselves tend to become aware of their differences: more privileged partners spoke of the shock of walking into a house with hundreds of crystal figurines or trying to eat spam with a smile.
Very often when you hear it used, that is what it means.
However, it can also be used to refer specifically to social characteristics that are less likely to change, or harder to change, than one's economic status, which is potentially changeable over time.
In such a case, social class refers to socio-cultural aspects of one's life, namely the traits, behaviors, knowledge, and lifestyle that one is socialized into by one's family.
This is why class descriptors like "lower," "working," "upper," or "high" can have social as well as economic implications for how we understand the person described.