I'm not an incestuous person, but I am a little confused

I'm 19 and I have a 17 yo brother. <br><br>My brother and I are the only kids in my family and we've always been really close. We're pretty much the only person we have for each other, and we've never had any problems with personal space or boundaries. <br><br>I came home from uni over the break, and my brother kept trying to get me to talk to him. <br><br>He even did my laundry and cleaned my room, and handed me a stuffed animal he got me to try to get me to speak. <br><br>I know he's not a bad guy, and I'm kinda worried because he's right there, and there's nothing wrong with the way he's approaching it, I just feel uncomfortable, and I don't know why. <br><br>Any help or insight is greatly appreciated...<br><br>But there's a new development, and the problem is I think I might want to have sex with him. <br><br>I'm not attracted to him physically, but I kinda want to do some exploration with him. And I'm not sure how I'd go about it or where to start, or if I even should. <br><br>What do you think?