Ryan Phillippe and Alexis Knapp dated briefly last summer -- and now the actress says she is pregnant with his baby.
A source close to the 26-year-old Knapp says, "Alexis has told friends that the child is Ryan's."
The baby is said to be due in June.
Reps for both Phillippe and Knapp had no comment, but the source says, "Ryan is aware of the situation (and) totally prepared to take responsibility should the child be his."
Maury Povich paternity test time!
Phillippe already has two kids with ex-wife Reese Witherspoon, has been on-again, off-again with Red Riding Hood actress Amanda Seyfried for months and was rumored to have had a fling with Rihanna between Seyfried hookups.
Busy guy -- surprising that he doesn't have more kids.
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