Jen & Josh Making Ben Batty!

JUST a week after The National ENQUIRER caught her getting cozy with a new bodyguard who looks like estranged husband Ben Affleck — Jen Garner is getting close with hunky co-star Josh Duhamel on the Atlanta set of their new flick, “Simon vs. the Homo Sapiens Agenda.” On-set spies said the co-stars — both married to others — have found a chemistry far beyond the script! “Josh is exactly what she needs right now,” revealed pal of both stars.

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Josh, 44, is “happily” married to former Black Eyed Peas singer Fergie, while Jen’s marriage to Ben has been in chaos in the two years since she caught him cheating with their kids’ nanny and filed for divorce.