It is the default mode.
Sexual By Nature
We are all. Face the facts. If you don't think so try not thinking about sex for a day, too tuff try five minutes.
We are all sexual animals not far removed from the rest of nature.
Embrace your sexuality don't hide from it or try to suppress it. It is a much more healthy endeavor to love and enjoy the sexual side of your being. That is how we live and love.