Reese Witherspoon and Jake Gyllenhaal struggling to maintain their relationship

Reese Witherspoon and Jake Gyllenhaal are struggling to maintain their relationship now that Jake is working 19-hour days in Morocco and London on his next potential blockbuster, Prince of Persia: The Sands of Time, STAR reports

"This is his first epic, and his mind is on his work," a pal of Reese's tells Star. "They talk on the phone and e-mail, but he's not 'there.' Reese is wondering if this is how it's going to be between them every time he's out of the country filming."

"They really need to reconnect and remember why they are in a relationship in the first place," says another source.

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