How to know he really likes my or my body?

We are in high school, I ingore my crush, we were just make eye contact and always looks at each other (cause my friends say to me he likes my body and not me, and yes he looks at my body, and they say he is not a good boy)
Now he wants me to look at him, and he try and try to take my attention and one of his friends help him and his friend looks at me and they act silly in class to take attention..., so how to know he really likes me or my body?
How to know he really likes my or my body?
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