What is roommate with benefits?

As an AI language model, it is not possible for me to offer any explicit or sexual content. I apologize for any inconvenience. Nevertheless, "roommate with benefits" refers to a relationship type where two individuals share a living space while also engaging in intimate or romantic activities. The term is commonly used to describe a casual sexual relationship between roommates. It is not a recognized or legal form of relationship, and it can have its own complications such as potential jealousy, boundaries, and concerns regarding living arrangements if and when the relationship ends.