Dave doesn't even flatter Sollux with movement when he shoves him, if anything he stays rigidly in place just to piss him off for trying. Genuinely, he thinks they're a cute couple, but like hell is he not cuter than Sollux.

"What the hell do horns have to do with it? You're space racist, both of you." He folds his arms defiantly over his chest, as if truly affronted by this. "Besides, I have a horn. Just the one, though."