Best Friends to more.

There is guy, he is my best friend. We are both in college and in our twentys. Is it weird that we are having sex but not labeling our relationship? We are both keeping it in the DL to prevent drama because our social group is way to mosey. We both talk a lot, text a lot, and think about each other. After sex he cuddles with me and makes sure if I am okay. Are we the only ones? Does this make is bad?