New York: Actor Ryan Phillippe`s ex-girlfriend Alexis Knapp could be pregnant with his baby.
According to Us magazine, a source said that Knapp, 26, who dated Phillippe, 36, last year following his split from Abbie Cornish, is in her second trimester.
Another source told the site Knapp "has been telling people" that Phillippe "is the father".
The insider admitted, however, that the actor "doesn`t know if he is the dad".
"If he is, he will take full responsibility for the child," the New York Daily News quoted the source as saying.
People magazine confirmed that "Alexis has told friends that the child is Ryan``s" and added that she is due in June.
After breaking up with Knapp in September, the "Lincoln Lawyer" star began dating Amanda Seyfried in late October.