What do you think of my younger brother?

I'm really curious about him; he's getting really strange. He's hanging out with his same friend name Ryan every friday, saturday and even sunday. They hang out every week. I mean every weekend. My dad had to say something for him to stay home and be with the family. Another thing is that he draw hearts and picture of a dude and a drawing that looks like a pencil but it looks like a dick on the window from the affect of after taking a shower the windows get heated up. There are 8 hearts on the window by the way. For his fashion sense he wears what everyone else wears. He had to get the same shorts that everyone has, the same shoes, he's obsessed with red; everything. His iPad case, all of his shoes, his clothes/jackets. And he likes sad country music. When i go by the bathroom to go downstairs; I would always hear his sad country music. What do you guys think of my 16 year old brother. Is he gay? Do you think he has a boyfriend? Does him and his friend Ryan play spin the bottle with just two of them? What do you guys think? I just want to be there for my brother, and it seems he's very shy.