False alert: Snapchat screenshots?

Yes, I admit it- among the stupid things I've done, I've send a nude or two via snapchat. I trust my boyfriend, and I know he hasn't screenshotted any of them. Why? Because he wouldn't dare (because it's me), because he has trusted me enough to reciprocate the sending of these pics, and biggest of all because he's in the military and such stupidity would ruin his life, and he knows it! Why did it say he screenshotted a sext of mine? He swears he never did (he could be lying), and he sent me a series of pics which cover (what he says are) all of his iphone pictures. I'm unsure of what is going on, but I had my face in the shot and I'm very scared of the implications that has.

Just be aware that when something is sent online via a server (such as the one where he's stationed) the owners of the server have full access to all content.

He may not have screenshotted your photos, but somebody did.

Learn to take responsibility for your actions, and their consequences