Guys, Is he flirting?

I have a HUGE crush on this boy, and he is giving me mixed signals. He's on my brothers baseball team and he's always saying that "My brother wants me to come to the game." and that my brother likes it when I come. but he doesn't. when there's a group book reading. whenever there's a kissing scene or sex scene, he'll look at me wink and smile. but I don't know what it means. Are there any boys out there know if he's flirting or if he's just leading me on?
Guys, Is he flirting?
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