Rihanna And Chris Brown

i’m a little confused cause if rihanna ain’t pressing charges why does all the reports say he is being charged with a felony.what is he being charged with and why?and can someone tell me what a criminal threat is cause its saying he made criminal threats towards her also.thanks

I still do cuz every1 deserves a second chance.

I know that Chris Brown beat her, but like why? and when? Sorry curiosity haunts me. (=