How do I tell my cousin that I like him more than a cousin?

I have a crush on my guy cousin. He's about to be 20 and I'm 19. We stay in an apartment together and sometimes I feel like he feels the same way but is too scared that I'll think it's weird. I have to know if he likes me too. How do I approach him with the idea without making stuff weird between us?
How do I tell my cousin that I like him more than a cousin?
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