Thank you for this lovely comment. Dyce was very, very tempted by Erandur, but Erandur's just so grateful and happy to come along when the Dragonborn invites him, he felt hitting on him would be taking advantage of his basically innocent affection.

And yeah, I wasn't entirely happy about the Nocturnal thing either (although the armour is sexy.) Luckily, fanfiction is the cure.