Wrapping his arm around the Maxim cover girl, Shane is seen leaning his cheek close to hers as they both smile to camera.
'About to watch my good friend Chris Martin & #Coldplay at the amazing Royal Albert Hall with @emilyscottofficial. Thanks for the awesome seats buddy,' he wrote in the accompanying caption.
The new couple also cheered on fellow Australian tennis wildcard Nick Kyrgios as he scored a win against world number one Rafael Nadal at Wimbledon earlier that day.
The busty beauty was more conservatively dressed when the couple stepped out together for their first joint public appearance on Sunday.