I had few periods in high school and early 20s where I didn't really feel much of anything. I did have many depressive phases during those years as well. I just gradually grew out if it I suppose. I know I have emotions, it just doesn't always come out right.
If you're depressed about knowing you have aspergers, the best thing to do IMO is to just accept it and move on. Worrying about it is what leads to depression. Or if you're in a situation/environment that keeps fostering depression, then change it. Give yourself some new scenery, get out of the house or something.
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