Chin up Seize.
I spent about 4 years single after a heavy loss of love . It was a crap time. But I came out of it knowing I now know how to be happy on my own.
I believe a person HAS to make a home comfortable for himself in his or her head, where they can retreat back if time calls to be on your own again.
What's done is done in regards to the presents. Its not that bad.
And.. Don't drink! You are just getting battered by craving emotions. Itl pass.