Alex has been a cautious person since way before the apocalypse.
It only worsened in the apocalypse, as right before it, he got the taste of betrayal—something he never thought he would have to face.
For someone like him, trusting someone was way harder than just killing them.
If he didn't feel like a person was trustworthy, just kill them and be done with them.
Alex didn't want to risk getting betrayed again.
So, just think about how he would've felt when he realized that the only one he somehow decided to trust seemed to have betrayed him as well.
His wounds from the last one were still fresh, so a new one would, of course, have hurt him a lot more.
But all of his suspicion and doubt evaporated the moment he saw the golden line, lightening the whole area with a golden hue.
At first, it was just a dim light, but as time passed and Alex's focus gathered on it, it started getting brighter.
The shine intensified.
