Warne broke the news on Twitter as he headed to Wimbledon to watch fellow Aussie Nick Kyrgios play Milos Raonic on Wednesday night.
“Ps And yes I`m taking my girlfriend @EmilyLScott who`s looking smoking hot too hahaha !!!” Warne had tweeted.
The lovebirds have attended several events together in London in recent days, including a Coldplay concert and after party.
They also spent time in Paris recently, as showcased by Warne`s Instagram account.
Just last month, Warne, who was earlier in a romantic relationship with Elizabeth Hurley, had slammed rumours that he was more than friends with Scott. But now he has owned it up.
Scott is also a disc jockey.