The only thing worse than wasting a year on that guy is wasting a year and a day. What a coward for not telling you how he was feeling long ago and for doing this via text. Sell all his stuff, get yourself a new apartment (or at least use the money from his stuff to redecorate the one you shared) and look at it as a fresh start. You've already lost all this weight- you're a hot property.
Have you ever read the advice column "Dear Sugar" on the website "The Rumpus"? I just discovered it the other day, and I can not tell you in what strange ways it has helped me think about things. You should definitely check it out.
Easy as it is to think things were perfect, they weren't. You do not want to be with someone who doesn't want to be with you. It is so very, very creepy that you didn't know anything was going on. If you did get back together, you would never be able to trust him again because he was so good at hiding his feelings this time. He manipulated you. Instead of being honest and talking about his fears, goals, and plans, he made you think everything was fine so he could selfishly hold onto you until he worked things out, then once that happened, he disregarded your feelings entirely and a made a decision about BOTH of you by himself.
I don't know if you aren't ready to be angry at him yet. If you're not, I don't mean to make you feel bad. You sound like a great girl, your profile pic is beautiful, and your grammar is excellent.
It's a buyers' market out there for us ladies, honey, and now's the time to be picky. You've got this.