Reese & Jake Taking Things to the Next Level?

You know there's something really special about a relationship when you feel ready to draw your family together with you partner's.

And it sounds like Jake Gyllenhaal and Reese Witherspoon are starting to take that landmark step.

We're told Reese's son, Deacon, now has his own collection of The Dark Knight memorabilia, thanks to Maggie Gyllenhaal, the sister of his mom's beau.

As one of the stars of the record-breaking movie, Maggie, brought Deacon, 4, a collection of action figures from the movie and a copy of the script.

"He's quite the Batman fan," a pal of the family tells OK!. "Deacon has been waiting for The Dark Knight to come out, although Reese was worried that it was too dark for him to watch at his age."

Maggie's gifts are just the latest sign of how close Reese, 32, and Jake, 27, have become.

During a recent romantic dinner at Allard's in Paris, "They looked very much in love and were happy and smiling the whole time," a staffer tells OK!.

Meanwhile, "Reese speaks great French — I was so impressed," admits a waitress who served the lovebirds and Reese's too children at Chez Janou restraunt. "They seemed to be one big happy family!"