EU (emotionally unavailable) man could be linked to a poor or non-existent relationship with his family, and in particular, his father.
The most important thing to do is to keep living your life and focusing on you.
You guys go way back to grade school and used to play in the same sandbox. In minutes he’s disabled your AV program, downloaded an exploitation tool from the internet, executed a powershell script and owned all the accounts that ever logged into your computer.
After downing a few beers you race to the bathroom and your nefarious friend immediately jumps into the drivers seat of your computer.
If you can talk about this subject with him, there is hope.
Most of the time these guys are so emotionally closed, that you intuitively do not even attempt to talk to him about his lack of commitment and you're desire to have a committed relationship.