Kimi Raikkonen could be the next father on the F1 grid.
The Finnish press is now reporting openly about the identity of the Ferrari driver's new partner, 26-year-old Mintuu Virtanen, following the end of his marriage to Jenni Dahlmann.
Amid unconfirmed rumours she is pregnant, the newspaper Seiska claims that Mintuu is now living in Raikkonen's luxury villa on the Helsinki island Kaskisaari.
When asked about the prospect of having their first child, Rosberg said: "I congratulate Sebastian Vettel and of course we are thinking about it.
"One day it would be nice, but there's nothing certain yet."