Industry,
I feel for you man I have been there and done that one. Anytime a woman says she needs space from now on we all need to read between the lines, i.e. she needs space away from you. This is chick logic that in her mind will make it easier on the both of you as you slowly drift apart, meanwhile she has probably had this on her mind for awhile and maybe even dropped subtle hints- but if you are like most guys this blindsided you.
The main thing is for you to concentrate on yourself and break off all contact with her. Focus on yourself for that is what she has been doing. I had the same thing happen to me from a 3yr. relationship at the start of this year. It sucks, but there is always light (HB's) at the end of the tunnel. Keep your headup and when you are ready get back in the game and go all out.