The father of actress Minnie Driver’s unborn first baby is San Francisco, California musician Craig Zolezzi, according to new reports.

The Good Will Hunting star confirmed the news she was pregnant in March during an appearance on The Tonight Show with Jay Leno in America, but she was careful not to name the father of the child.

Now, a source tells Life & Style magazine that Driver has been dating Zolezzi "under the radar" for "more than a year."

The insider tells the publication: "She and Craig are preparing for a girl. She wasn't planning to find out the baby's sex in advance, but she has a feeling it's a girl, so she's going with that feeling for now."

Driver is due to give birth in August.