Easy 10 points!!! What should I do?

Just because he's your bff's bro does NOT mean you CANT be together trust me, it may be awkward as its her bro but still. It is a free world last time i checked. But ask him "whats something like that.?" And then it might start a deeper convo into that subject. But i still dont know where you got that idea from.Just try something like that, and then he might say something about a "relationship"