[Loki reminds himself that this Thor hadn't been around with the Boy. Hadn't gone through so much with him, seen him genuinely be good. He had to start from scratch here in proving himself. And in some ways it was better. He could prove himself without the crutch of his younger self's reputation. So he accepted the returned drink as a tentative peace offering. It might be meant that way, it might not, but he could hope.]

I was over the chains myself, to be honest.

[Luckily Loki doesn't take it as a threat, not with the solid warmth of Thor's shoulder against his following, the further commentary earning a low chuckle from him.]

Well, I'll admit to some curiosity too, but my main reasons were indeed altruistic.