Over the past five months you have looked back at your time with him and remembered it fondly. No surprise there as we as humans like to focus on the positive memories and block out the bad ones. This leads to overly favourable recollections of things/times/people past. Now you have the real thing coming back and what have you got to compare him to? You'll compare him to your selective memory of his positive traits and everything looks worse in black and white.
You are depressed because you are afraid that he won't be as good as you remember him.
You are depressed because you are afraid that he won't be as good as you remember him.
