The striking pair recently made a visit to a California medical centre. Making no attempt to hide the fact that they're an item, onlookers reported they were very affectionate towards each other in public. "They looked totally in love," says an onlooker.

After leaving the doctor's office, they climbed into separate cars and headed back to Reese's home, with Jake keeping an eye on his 31-year-old girlfriend's car and even waving furiously to her as they drove. "Jake put his hand out of the sunroof and was waving," says an eyewitness.

The twosome, who have been dating for three months, first sparked pregnancy rumors after they were spotted leaving a large complex that houses many doctors' surgeries two weeks ago.

"She was in a great mood," says a witness who saw Reese leave the building. "She was smiling from ear to ear."