AceShowbiz -

Justin Bieber reportedly wants a serious relationship with his rumored girlfriend Nicola Peltz. Justin and Nicola sparked dating rumors after they were spotted together at the West Hollywood hot spot, Nice Guy, last week.

According to ET's source, Justin has been relaxing in Los Angeles, California before he returns to touring, and met Nicola in Hollywood. After getting her phone number, the "Baby" hitmaker reportedly asked the 21-year-old actress out on a date.

Nicola was allegedly hesitant at first, but last week she did agree to go miniature golfing with Justin. "Justin wants something serious with a girl again," the source explains, "He doesn't want to f**k around anymore. It was a real date with her."

On Wednesday, May 25, Justin and Nicola went for a dinner date at Mastro's Steakhouse in Beverly Hills. According to an eyewitness, the pair were sitting in the backseat when the singer's car pulled up to the restaurant.

Justin was seen getting out and walking around the car to open the door for Nicola. They didn't speak with photographers outside, but an eyewitness says that the "Love Yourself" hitmaker looked "reserved" and "serious."