In casual dating contexts, it can be used as a "soft" version of a formal dinner invitation.
Be careful not to confuse "buying lunch" with these similar-sounding idioms: buy you lunch meaning
: Slang for preparing for a long, difficult task that will require significant time. In casual dating contexts, it can be used
: To outcompete or take an advantage away from a rival. In casual dating contexts
A manager might offer this to get to know your career goals or provide informal mentoring.
It is a casual way to thank someone for a small favor or extra effort. 3. Romantic Interest (The "Date" Offer)