He asked me to arm wrestle. Does this mean he flirting, or he likes me?

So I am 13, and my crush is 14. So on field day my crush from across the room yelled my name then pointed from him to me. We were in the arm wrestling place were arm wrestling tables were set up. I shook my head and said no. Then later I armwresled my friend (she won) and he came up to me right after and said "come on? Please?" And I said yes. So we arm wrestled... Was he flirting with me or? Does flirting mean he likes me?
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He has said little things like this before and but I don't know him that well. Like he was doing this handshake with my brother then turned to me with his hands out.
He asked me to arm wrestle. Does this mean he flirting, or he likes me?
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