I know a boy who sends me a text message every day while eating: Have you eaten? Why?

Maybe I like you! I want to have dinner with you, so I send you a message to ask you, I'm afraid you will eat it! Answer no at the right time, see his reaction!

Maybe you can reply in a joking way and say, "Why did you invite my sister to dinner?" ? If so, I'll give you a chance to show it.