I am SO absolutely sorry you are going through all of this. You aren't the only person who is hung up on the looks, when I wasn't speaking with my current friend for a month, I kept looking at his pictures (torturing myself really)...and it was his eyes that I couldn't stop looking at. And asking myself...why? I still can't explain it.
Just know that this is grief, and it is very hard, broken hearts are real. 10 years ago I went through the worst one I had ever experienced...I would be lying if I said I was over that, it took a LONG time to get ok with losing him. But he was the love of my life and I won't ever get 'over' him. I find life still moves on around us and we do eventually find our way back into that flow in some form or fashion.
I can only offer you big virtual hugs and the knowledge that you aren't alone, even if it feels that way.