Does your relationship need space?
1. Don't panic and lash out
Did your love muster the guts and ask outright for some space? Is it dead obvious that he was super into you barely a few weeks or couple of months back but it "ain't so happening" now?
If it was a classic case of too much, too soon, or if he's not the "super emo" sort, don't take it personally. It's a pity but not everyone appreciates a passionate person outside of the bedroom. Accept that he's just voicing his opinion and let it be.