*pwah* that's nasty. like reeaaally, reeeaallly, pour listerene on my eyes for reading it yucky. I woul consider bashing himseveral times about the naughty bits with a foot or similaraly powerful object.
Few Questions Are you sure he isn't joking? (As already asked) Is he your blood brother? You are really fuckin' sexy, can you blame him?
Wait, and you all call yourselves hippies? Haha, just kidding. The way I see it ... it wouldn't necessarily be a bad thing (albeit probably weird, awkward, and socially disrupting) if you two liked eachother and decided to date or go futher, but ... just like any other time, if he likes you and you don't like him, and he constantly says a lot of lude things, well, sometimes you need to just hit 'im where it hurts. I say you shouldn't blame him for liking you that way, but you can definately blame him for acting as he does (at least the way you say he does).
have yu ever talk to your brother about it. aybe this is a thing that's really bothering him, or maybe he doesn't realise it's 'right' you can love who ever you want. but loving a familymember can be scary. fo both of them. just talk to him. Let him make it clear what his feelings are to you, and make him clearwhat yours are. he's still your brother, freaky ornot.