According to Someone Who Was There, the Tinseltown lovebirds were walking on Arch Street down by the church and having a raaather heated discussion.

“The Ryan guy was clearly being a baby,” said our spy. “She kept grabbing his arm and he’d yank it away and she’d keep saying ‘Ry, come on, Ry. Stop.’

“He kept switching directions on the sidewalk like he wanted her to leave, responding over and over, ‘Roger that!’ - whatever that was supposed to mean.”

The hostilities ceased when the couple noticed that there was a photographer trailing them.

“He grabbed her hand and stormed away,” said our snoop.

Reynolds, of “Definitely, Maybe” fame, is in town filming “The Proposal” with Sandra Bullock and Scarlett Jo was in town visiting him.

And if you believe the tabloids - and who doesn’t - there has been some trouble in lovelyland for the Tinseltown twosome. Word is, the couple is going through “a rough patch,” because Reynolds, 32, wants to tie the knot and his galpal is just 23 and very focused on her career at the mo.

“Scarlett is younger and has no desire for a husband or family just yet,” a source told London’s Daily Mail.

Guess you could say she rejected The Proposal.

Disney is distributing the film that stars Ryan Reynolds and Sandra Bullock. Anne Fletcher directs from a script by Peter Chiarelli. The story centers on a publishing executive (Bullock) who forces her assistant (Reynolds) to marry her so she can avoid deportation to Canada.

Mandeville's David Hoberman and Todd Lieberman are producing; Alex Kurtzman and Roberto Orci are executive producing.

Production is slated to begin this month.

Akerman ("27 Dresses") is repped by Endeavor and Sanders Armstrong Caserta Management. Steenburgen ("The Brave One") is repped by Gersh and Management 360. Nelson ("Blades of Glory") is repped by Paradigm and Forward Entertainment. Mandvi ("Music & Lyrics") is repped by Leading Artists in New York and Silver Massetti & Szatmary in Los Angeles.

A video file from Ryan's appearance on Scrubs will be added soon!