Jennifer Aniston introduces her new boyfriend Justin Theroux to friends

Jennifer Aniston introduced her new boyfriend Justin Theroux to her friends this past weekend.

A source tells PEOPLE that Jennifer Aniston had a party and used it as an opportunity to introduce Theroux to Courteney Cox and Chelsea Handler.

"They all had a great time and enjoyed Justin's company," the source told PEOPLE. "He's edgier than the guys Jen usually dates. She really likes him!"

"Jen is totally into him," a source told UsMagazine.com. "They have been hanging out for months. She wants to be with him all the time. She's diving in headfirst," the source added.

Jessica Simpson to design line with Ashlee Simpson for "tweens"

Jessica Simpson has announced plans to partner with sister Ashlee Simpson to design a line of clothing for "tweens." The line, which will be a part of the Jessica Simpson Collection, will include denim, knit tops, tees, outerwear, footwear and sportswear.

"Creating a tween apparel collection was a natural extension for the brand. I'm excited to bring my sister, Ashlee, along as co-creative director of this division, because she brings a savvy rocker edge that defines today's tweens," said Jessica.

"My goal as co-creative director will be to design clothes that will help inspire young girls to express their personalities and creativity through fashion," added Ashlee.

Justin Bieber introduces Selena Gomez to his extended family

Justin Bieber, 17 has introduced girlfriend Selena Gomez 18, to his extended family.

The couple were joined at the Swiss Chalet restaurant in his home town on Stratford, Ontario by his cousins and aunt and uncle.

One source said: "Justin and Selena had lunch with Justin's cousins and his aunt and uncle. They were really sweet and make an adorable couple.

"They looked happy and in love. They acted just like everyday people, very down-to-earth. Justin is part of the community, he's one of us and is as friendly as can be."

Selena introduced her boyfriend to her family in Texas last week.

Selena also spent time with Justin's mother Patti Malette and grandparents at local eatery Madelyn's Diner.

Local resident Taylor Ramsey said: "They looked completely in love with each other.

Cameron Diaz and Alex A-Rod Rodriguez Breakup?

Cameron Diaz and Alex A-Rod Rodriguez have reportedly ended their relationship.

A source told gossip blogger Perez Hilton: "They've broken up. [Cameron] is hurt and betrayed, because she tried so hard to please him... She went overboard."

When asked about her thoughts on marriage and children, Cameron said: "What about it? If I say, 'This is how I'm going to live my life,' I am closing myself off to all these other possibilities. I'm the kind of girl who likes to be open to every possibility, who is open to all my options."

Michael Fassbender and Zoe Kravitz dating?

'X-Men First Class' stars Michael Fassbender and Zoe Kravitz are reportedly dating.

The couple met on the set of the new action movie 'X-Men First Class.' Fasbender and Kravitz are said to be keeping their relationship "low-key".

An insider explained: "They're really low-key, but they have a great time together just talking music or movies. They really didn't want to be a topic of conversation during the press for 'X-Men'."

The source added to US Weekly magazine: "Zoe's really mature for her age in that she has very strong opinions and she is very confident in herself. Most people are shocked to learn she's so young; she doesn't really bring it up and age would never stop her from dating anybody.

"For how good looking and smart he is, Michael's pretty shy. She is actually the one taking care of him most the time. She really respects his talent."