Tensions are still running high for Justin Bieber** and Selena Gomez.

Temporarily going their separate ways after an Oct. 31 breakup, the couple reunited for a tense dinner date Friday at Japanese eatery Yamato in Encino, Calif. Arriving separately -- Bieber came from the studio and Gomez from the Beverly Center shopping mall -- the pair couldn't even peruse the menus before beginning to bicker, a source tells Us Weekly.

"They had just sat down and didn't order when they started to fight. Ten minutes later, they stormed out without speaking and she drove off in her car," the insider reveals of Bieber, 18, and Gomez, 20, who is said to have initiated the couple of two years' initial October split.

Stunned when Gomez stormed out of the restaurant, Bieber carried on "swearing and yelling" outside the eatery before following Gomez to her home and begging for her to allow him inside, according to the witness.

When Gomez wouldn't allow Bieber to pass through her gated driveway, the "One Less Lonely Girl" singer started yelling her name over the fence to no avail. Once Bieber realized he was being photographed, he began "swearing and yelling and lost his temper," adds the source. Gomez later made her way outside -- but left Bieber out on the street, refusing to open her gate once she realized he was the cause of the commotion.

Though the new issue of Us Weekly reports that Bieber is "texting other girls constantly," the singer -- whose car was parked outside of Gomez' home on Saturday morning, hours after their ugly spat -- is determined not to let Gomez go.

Hinting that their split wasn't final during a Nov. 10 radio interview, Bieber later sang Justin Timberlake's breakup anthem "Cry Me a River" at his concert. "They're young," sums up one insider. "They're always on and off."

This article originally appeared on Usmagazine.com: Selena Gomez, Justin Bieber Have Massive Fight During Dinner Date