Chris Pratt & Katherine Schwarzenegger Have 'Gotten Serious Quickly'!

Chris Pratt is with Katherine Schwarzenegger are the real deal, y'all!
We first heard about the fledgling couple feeling each other out on a picnic date in mid-June, but according to a new source they've "gotten serious, quickly!"
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An insider tells ET:
"[They] went from casually dating to spending much more time together. Chris and Katherine have introduced one another to their family and friends, and