Former Got To Dance judge Aston took Sarah to watch Alexandra Burke's lead role in West End's hit musical The Bodyguard at the Adelphi Theatre.
Like many others, it seems Aston was blown away by Alex's performance as singer Rachel Marron.
Alex took over the lead role in June following Beverly Knight's eight-month run. The role was made famous by the late Whitney Houston in the movie co-starring Kevin Costner.
After the show, Aston said: "I mean wow is the only word for @alexandramusic... just saw her kill the stage at The Bodyguard! You were born for the stage Miss B! x."
Of course, it was a mini X Factor reunion too, as JLS came runner-up to Alex after both acts competed on the talent show in 2008.
In a photo showing Aston and Sarah posing with the leading lady backstage, Alex said: "So good to see my boy @astonmerrygold and his beautiful missus! Love you guys!"
Later, Aston and Sarah snuggled up for a photo as they dined out for a romantic meal. Commenting on the photo, Aston simply said: "Date night," with a blowing kiss emoticon. Aww!
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