What does it mean when a guy cares about whether you've eaten or not and even remembers to ask your friends the next day whether you had lunch?

This is the guy I like. Whenever we talk there is a lot of playful teasing from both the sides. I always notice him asking me questions and joking around with me about something or the other. As I'm quite thin he was wondering whether I even eat at all to which my friends told him that I eat very less and that is how he started to care about it!
What does it mean when a guy cares about whether you've eaten or not and even remembers to ask your friends the next day whether you had lunch?
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