Ummm...first entry

I guess this is kindof a call for help.
I am trying to work up enough courage to come out to my family and friends.  And I know that everyone is always like, "be yourself" and whatnot, but I am scared to lose some of my close friends and even some family.
Many of my aunts, uncles, and cousins are seriously Catholic.  I am not christian, and they are constantly trying to convert me.  This already gives me a feeling of not being welcome.  Now, if this comes up, they may refuse to come near me.  Don't get me wrong, I love each and every one of my many aunts, uncles, and cousins.  Probably why this scares me so badly.
My friends are the type that are wild and crazy and pretty much do whatever the hell they want.  Not, like, drugs or anything, but more just fun.  I literally have no freaking idea what their reaction would be, and yet I don't really want to find out.  
In reality, though, the only reason I feel bad today is because I am home sick and crap like that.  My life overall is good enough for me.
Any ideas on how to subtly come out?  Is that even possible?