Luffy says he isn't interested in sex/love from a very early age and both Ace and Sabo are extremely relieved because that way they don't have to have the uncomfortable talk™ and they get rid of romantic dramas. But then Luffy comes back one random day from school, holding onto a guy like a koala, and saying "This is Zoro! We just met but he's my boyfriend now" and sometimes they just have to accept their aroaspec brother will find ways to make their life harder than it should be.