Based on the existing answer and question, it appears that the person being addressed is being asked about the meaning of the word "belanja" in Bahasa Indonesia/Malay. The existing answer states that "belanja" means "treat" in Bahasa Indonesia/Malay. Therefore, it can be inferred that the person being addressed was referring to the fact that the other person was flirting with @jw272 and offering to treat them.
