A Second Chance for Ben & Jen?

COPARENTING HAS BROUGHT BEN AFFLECK AND JENNIFER GARNER CLOSER THAN EVER, BUT FRIENDS WORRY A REUNION WOULD MEAN DISASTER.

HE went for it. As Jennifer Garner adjusted her stance and aimed her paintball gun on the grounds of Combat Paintball Park in Castaic, Calif. where her family gathered on March 2 to celebrate son Samuel's 13th Ben Affleck moved in. Sliding an arm low around his former wife's waist, the Oscar winner angled his pelvis against her hip and pulled her in. It was a surprisingly charged embrace for the longtime friendly exes. An observer tells Star it was clear there were "sparks" flying, adding that the two were "giggling and joking and having a great time with each other."

Nearly 10 years after announcing their split following a decade of marriage, the 52-year-old Hollywood A-listers appear to have taken their amicable co-parenting of Samuel, Violet, 19, and 16-year-old Finn to a whole new and unexpected level. "It's no secret Ben's been leaning on Jen more and more since he split from Jennifer Lopez last year," a source tells Star. "It's hard not to notice how close they've gotten." With this new PDA, however, says the source, "there's been a lot of buzz that they could be rekindling the romance, judging by all the time they've been spending together and their cozy behavior at the paintball park." Notably, the rendezvous came barely a week after Ben's divorce from J.Lo, 55, was finalized.

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