This romance heated up in record time!

Chris Pratt and his new girlfriend Katherine Schwarzenegger took his son Jack to lunch in Malibu yesterday, and Arnold's daughter looks like she's quite at ease spending time as a family, despite the fact they've been dating for less than two months. The A-list actor doesn't waste any time getting serious apparently!

The pair, who were introduced to each other by Katherine's mom Maria Schriver, were first were spotted together on a romantic picnic outing in Santa Barbara last month, and just this last weekend, they were photographed sharing a kiss after church.

"[They] went from casually dating to spending much more time together. Chris and Katherine have introduced one another to their family and friends, and have been almost inseparable when they are free," a source dished to ET.

The Guardians of the Galaxy Star wouldn't be allowing his kid to get close to a new romantic interest if he didn't think there was a future there, either.

"That was a big step for Chris. Until he knew it was more than just casual, he wasn't introducing Jack to anyone. Chris and Katherine are very happy together," the source added.

We wonder what his ex Anna Faris thinks of all this?