McManus wore a black tux with velvet blazer and Walton, 44, donned a sheer embroidered gown, paired with a gold clutch.
The TV star took to Instagram following the event to share an affectionate post.
"Proud to be the handbag. #AACTAS," he captioned a selfie of the smiling couple.
He also shared a full-length shot of the stars and wrote: "Black tie date night with @tasma_walton. #AACTAS."
Too cute!