Is it ok to trade pictures with girls my age(15)

Yeah i have done it . Just make sure no one see it ! 

I think it's unwise because those things have a way of ending up where you DON'T want them. If the royal family can't keep their photos private, how do you think you can?

If the other person doesn't show/send it to a bunch of friends just because he/she can, what do you suppose will happen if he/she gets mad at you?

i don't think it is. around two years ago ( so when i was 16) a guy in class had pictures of girls our age on his computer. the school chaplin found out and called the cops who then raded his house, took his phone and laptop and arrested him for child pornography. he didn't go to jail or anything but i think he did get a fine and i think he might've had to go to court but i'm 100% sure. but he did get in a lot of trouble