Justin Bieber and Selena Gomez looked ''more in love than ever'' on a recent lunch date.

The singer and his pop star girlfriend enjoyed a romantic lunch at Benihana restaurant in Sherman Oaks, California, on Saturday (26.05.12).

A source told Hollywoodlife.com: ''They are like regulars and are always really friendly. When they came in for lunch, they looked more in love than ever. Justin was holding Selena's hand on the table.

''They split an order of the vegetable tempura and Hibachi steak. They had green tea ice cream for dessert.''

As well as being friendly, Justin also reportedly left a generous amount of money for the waiting staff.

The source added: ''Justin once again left a very generous tip. He left almost the same amount as the entire bill.''

Justin, 18, and Selena, 19, may have been celebrating after the 'Boyfriend' singer completed buying his first home, a seven-bedroom mansion in the Californian suburb of Calabasas for $6.5 million.

The 10,000 square-foot property contains eight bathrooms, a library, cinema with stadium seating, a wine cellar, a wet bar and there is a pond within the 1.3-acre grounds, according to the Los Angeles Times.

Justin is thought to be keen on installing some high-tech gadgets in his mansion - which was constructed in 2005 and had been listed at $8.75 million - which also features a big guest house, large garage and pool, as well as a games room.

The star's weekend took a turn for the worse on Sunday night (27.05.12) however, when he was involved in an altercation with a paparazzi, which has led to him being accused of assault.