He has left me? 😩

So, there's this guy and for a while he asked me "what are we?" And me, being the absolutely shite person I am kept saying "I don't know" when I clearly fkn know. I wanted him so bad. Anyhow he went away for a bit and since he has been back, he doesn't want a bar of me? It hurts me so much to even think about it. Should've just went for it when I had the chance. 
Send help, I wanna bounce back and make him regret his decision, but then I wanna eat ice cream and stay in bed. Any advice?Â