[He nuzzles right back, also happy to be in Childe's arms. Then, he cracks a smile hearing that Venti made sure to tease his lover as much as possible.]

Even though I told him that my heart belongs to you alone, he still can't let go. [Sigh. And Childe keeps on falling for it.] But I'm here for you now.

[Once they enter the house and the Harbinger calls him by the title, Aether smirks as a hue of red paints his cheeks.]

Well then, my dear King. You have me in your clutches and I cannot refuse you anything.

[He reaches up to trail his fingers softly against the other's chin and jaw.]