Pre-TFA: Hux is checking the troops when a spy tries to shoot him to stop the advancement of Starkiller/slow down the first order by eliminating its main strategist. Before the bolt can reach him however Kylo appears from nowhere and stops it like it's nothing, before disarming the spy in a second. Hux finds Kylo's power and efficiency incredibly hot.

+Hux is hot and bothered but pretty embarrassed a spy managed to infiltrate the organisation in the first place and that he's now indebted to Kylo
+Kylo is also embarrassed when Hux genuinely thanks him