Faye is the more sympathetic character, purely because we've known her longer and more deeply than Angus, I rather suspect that is part and parcel of people vilifying Angus. They have a sense of "ownership" about Faye.
On the flipside, knowing Faye is not equivalent to loving Faye. There's plenty about her that's perfectly unlikable, while Angus is more of a blank slate. He's a generally decent guy. One can make out a stalker accusation against him, but it's totally unwarranted. He was up front about coming to CoD to get his fix of wit, and generally didn't follow Faye beyond the shop until Faye started showing up in his life.
And it's not entirely unfair to blame Faye. Angus is guilty of ignoring what he didn't want to see, but Faye went out of her way to make it easy for him to do that. All intentions were good, on both sides. Their intentions made excellent pavers.
Angus made a mistake, at the end. Walking out in silence wasn't the best move. But people are, generally, over stating his options. It was Faye who ended the communication, and the best thing Angus could have done was to state he was open to talk later. As has been noted, rather a lot, he can't do anything if Faye doesn't cooperate. In the end, she shut down.
So Angus didn't make the optimal choice in the end, but Faye didn't either. She could have admitted she was confused and scared and uncertain, and just not able to deal. Something in that sense came up when Angus asked if they were even going to try. But rather than go there, she dodged the question. Considering the gravity of the question, Angus is entirely justified in being very hurt.
I see both sides. Objectively, Angus is getting shafted, and that says to me that the relationship is all over but the crying. As I've stated before, it's going to be more work on Angus's part to get through this. Thankless work, or something close to it. Angus is patient with Faye, but he's no Marten. I just don't see him signing up for it, without assurances I don't think Faye can give. It's not fair, and he already feels wronged.
Maybe I'm misjudging him, or maybe Faye isn't doing this because she watched her dad commit suicide. Those would change everything. But I'm betting I'm not. And, to be honest, Angus deserves better. But Faye may not have that give. If she doesn't, patching things up will require a heroic effort on his part, and that may be more than he has to give.
This is a little late and possibly has already been mentioned, but I was just Random-ing around and found this again: http://www.questionablecontent.net/view.php?comic=2671
Possibly relevant as one reason Faye hid her true feelings, and Marten will not approve, but my bet is he won't get upset with her. His drunk ass said that because he was miserable and she had a chance for not miserable. She is his best friend. He may not know why he's hugging her, but I bet he suspects.