"He's been calling Reese to tell her how he's never loved anyone as much as her."
Although Ryan desperately wants to give his marriage another go, Reese has allegedly been growing close to Jake Gyllenhaal on the set of their new film 'Rendition'.
An on-set source said: "Jake stopped by her trailer and waited for her. They laughed and talked, then he left."
It is believed the 30-year-old actress has banned all mobile phones and cameras from the set to stop stories about her and Jake getting out.

Reese cited "irreconcilable differences" as the reason for her and Ryan's split in the divorce papers and has asked for custody of the couple's two children - seven-year-old daughter Ava and three-year-old son Deacon - but with visitation rights granted to her husband.
It was reported that Ryan had been having an affair with 24-year-old Australian actress Abbie Cornish after the pair met on the set of their film 'Stop Loss'.
However, both deny the allegations.

Last month, Witherspoon assured fans she's coping well following her split from Ryan Phillippe.

Witherspoon had canceled a string of public engagements to spend time with her family, including an appearance at designer Carolina Herrera's new Los Angeles boutique last month.

She says, "I'm doing fine. I'm getting out a little more now. You'll be seeing more of me."