Brother is moving in, how would you approach him?

I am 21, he is 24 he is moving into my apartment in a few weeks. Everyone in my family knows that I have a crush on him. Inspired by my situation, my dad wants to write a novel about incest. My brother is also attracted to me, at least that's what I hope. I think he would also be interested in having sex with me, by the way, my dad is also attracted to me, but he has always rejected me.<br><br>My question: what's the best approach to get close to my brother? In which ways can he show that he is also attracted to me? What are the steps I should take before moving in together?