I'm 20, my brother is 17. Several people in my English class thought it was weird that my brother and I often see each other naked. I mentioned how I had been waiting for him to get out of the shower so that I could get in, and he left the water running and I got in as he got out. Several of the girls thought that was "a little gay" even though he's my brother. Am I strange to think they're the ones who are weird? We don't take baths together any more, obviously, but we have showered at the gym together. How is that different?