Hm. I didn't romance anyone (the old story, nobody available appealed to me), had Anders at 100 friendship in the middle of act 2 without even trying, Aveline and Varric the same. Issy was a skanky hoe and left with the relic, and I had never troubled myself with Fenris because I think he's annoying. Stumbled across a gift for him and since he's so anti-mage pretty much left him out of my planning.

When he said that he wouldn't side with me, I was like, so what? GTFO.
And suddenly, as soon as I had slashed myself across the city back to the Gallows (strange, hadn't I been there a minute ago? Why am I suddenly back in Lowtown???) he shows up again going, yeah, we're friends and stuff, so I'm coming with you after all. I was a little nonplussed at this.