It was on Tuesday that Grant's spokesman revealed he had fathered a child by Tinglan Hong, who is 20 years his junior.
The previous night saw him out with the young German, who uses the one-word stage name Schmidt and divides her time between Berlin and London.
She is a protege of record producer Guy Chambers, the multi-millionaire former song-writing partner of Robbie Williams.
Miss Schmidt told Bild: "I was in London with Guy to talk about my first album. In the evening we shared a meal and there got to know Hugh Grant.
"Since then we have come to understand one another very well and have become good friends. But there is definitely nothing more than friendship. Now he is in Berlin and invited me to dinner. That is all."
In the promotional video for her EP Sin City, which recreates the louche excess of the 1920s, the singer appears in stockings and corset and a short-cut tutu. She appears to run her hand down the chest of a fellow female club-goer and move to kiss her.
Grant has been in Berlin filming Cloud Atlas alongside Tom Hanks, Jim Broadbent and Halle Barry. The film - which began shooting in mid-September - is based on the 2004 novel by David Mitchell.
The £87 million production - reported to be the most expensive movie ever produced in Germany - is due to be released next year.
Miss Hong gave birth on September 26 at the private Portland Hospital in central London by caesarean section. Grant was not at the birth but spent around 30 minutes with his daughter before heading to Scotland to play in a golf tournament.
- Daily Mail