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Ryan Phillippe has found a new love ... 20-year-old blonde model Paulina Slagter, according to Life & Style.

X17online shot these exclusive photos of the smiling couple leaving a West Hollywood eatery earlier this week.

The 37-year-old Lincoln Lawyer actor was previously married to actress Reese Witherspoon ... and dated actress Amanda Seyfried earlier this year.

As for Paulina, a source tells L&S, "It's nothing serious. It's just another girl." Sounds like fun!

See more of Ryan and Paulina together in our gallery below.