Everyone has at least one. There are things which you keep away from others simply because you find it unfitting for others to know. Sometimes is because the something which you don't want to tell them will hurt them, sometimes it breaks ties, sometimes it just gets bad in the wrong hands.
A secret can be easy to keep, or it can be really difficult. Like when people start noticing things about you, and then jump to conclusions about it, I guess it might be better to just let it out so that it clarifies things, and doesn't become a rumour.
I hope I can trust those who know, not that I have a choice in the matter anyway. This may make or break friendships. I just hope they can tackle this trust I place in them maturely.