Blackmail. help!

Without sharing too much personal information, i really need legal advice. When I was a minor, (15-17 years old), i was dating a guy 3 years older than me. During our relationship, I sent him pictures that could be considered "inappropriate". They were intended for his eyes only. When we broke up, he threatened to put the pictures online, and then proceeded to do so. To my knowledge, he removed them later on. However, he swore he had lost all of this pictures, but has recently been emailing them back to me with comments about them. I'm scared he's going to somehow use them to blackmail me or put them online again. Is there anything i can do? Please please help me.

Remind this jerk that he is guilty of statutory rape and that if he indeed wants to be charged with that crime to keep incriminating himself. What a dumbass he's creating evidence against himself.

...and blackmail is a crime remember...