My friend says her brother likes me. I however don’t see it. If he does then what should I do?

I want to preface this by saying that my friend’s brother is a BAD person. Not serial killer bad but the rebellious gets into trouble and has a rocky relationship with his sister bad. I went over to my friend’s house and her brother came down and i acknowledged his existence. Then later on he chased us outside and threatened to spray us with a hose. I personally didn't care so i went up to their porch. My friends have told me that if i was anyone else he would've sprayed me. Apparently he called me by my name also and thats “rare” for him cause my other friend is “bro or bitch”.

My friend says her brother likes me. I however don’t see it. If he does then what should I do?
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