Jennifer Aniston and Justin Theroux are enjoying some romantic time together in Hawaii, but Jen may not be feeling in a loving mood when she finds out that Justin had originally asked another woman to accompany him — ex Heidi Bivens!

US Weekly reports, “Theroux’s Hawaiian getaway was originally planned with Heidi Bivens … And in March, Bivens gushed to pals about returning for the summer.” Awkward!

Later that same month Jen was spotted with Justin and it now seems she will be the woman by Justin’s side as he celebrates turning 40 in the tropical island.

So HollywoodLifers, would you be upset if someone took you on a trip they originally planned for their ex?

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Jennifer Aniston‘s latest romance with actor and write Justin Theroux may be over almost as quickly as it started — he is already seeing his ex Heidi Bivens again! Star reports, “Justin and Heidi secretly met on Father’s Day, and Justin spent most of their time together apologizing for acting like a cad.” Uh-oh Jen!

One person who may not be surprised by Justin’s devious ways is Jen’s best friend Courteney Cox, who apparently warned her pal about her new man. “Courteney has begged Jen to dump Justin,” a friend tells the magazine.

Courteney may be right too! “[Justin's] already complaining how Jen is suffocating him, so suddenly he’s wondering if he broke up with Heidi too quickly.”

What do you think HollywoodLifers — will Jen and Justin last?

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Jennifer Aniston walked around NYC June 21 wearing a sheer Michael Kors sarong that looked a little more beach-goer than city-stroller! But with a pilates-toned body like that, we don’t think there were any complaints, especially from boyfriend Justin Theroux!
The lovebirds took their romance to the Big Apple last week, where they were seen wearing matching gold rings! Could Jen have finally found the right guy for her after her string of bad-boy bachelors since her divorce from Brad Pitt in 2005?  She thinks so!

The Wanderlust co-stars are now living together in Jen’s LA pad after only a few months of dating. Even though Jen just bought some real estate of her own in NYC, the couple is staying at the apartment Justin shared with his former girlfriend of 14 years, Heidi Bivens. The two broke up when Justin finished filming Wanderlust, but Heidi apparently only moved out a few weeks ago.

From the looks of it, Jen is so in love, she doesn’t care if her skirt is see-through!

Alli Holt

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You would think Jennifer Aniston would be careful about stealing another woman’s man, but that doesn’t seem to be the case. Just like Angelina Jolie took Jen’s ex-hubby Brad Pitt while the two were filming Mr. & Mrs. Smith, Jen fell head over heals for her new beau Justin Theroux — who had a girlfriend of 13 years, Heidi Bivens, back at home in NYC — while they were filming Wanderlust down in Georgia!

“Jen wanted Justin and it didn’t seem to matter that he was already with someone,” a source close to Justin tells Us magazine. “It’s amazing she would go for an attached guy after what happened to her.”

Jen fell for Justin the moment they met on set in September. And though some people say that the two didn’t get intimate until after Justin broke up with Heidi, others suggest that they did. “He broke up with Heidi for good in March,” the source explains. “But she didn’t know Aniston was the catalyst — until now.”

Jen reportedly didn’t wait to get what she wanted. She went full swing into chasing her prey by hosting fabulous parties at her house on Lake Ruben in Georgia where she was staying while they filmed. Soon enough, Justin and Jen were the only ones attending the parties — and the interactions became private moments. “It was secluded, you could never see who was coming or going,” notes another insider.

A source close to Justin suggests that Jen and Justin got intimate while down in Georgia, but then took a break. “Jen and Justin both backed off,” says the insider. “Justin’s pretty bold, but he felt like it wouldn’t be much longer before anyone got wind of it.”

When they were done filming, Justin started to fly out to visit Jen in L.A. telling Heidi that he “was helping her with her movie,” shares a source close to Jen. But he couldn’t break up with Heidi right away because he had been with her for so long. “Things were over with them but it was going to take time to undo” was his explanation to Jen, says the Justin source.

Another source says that “Jen did not feel like she could jump in with him until things with Heidi were officially over.” So that’s why he dumped Heidi in March — and Justin and Jen were spotted shortly after all over Hollywood and NYC together.

“They’ve gotten very serious quickly,” says a pal of Justin’s. “All his friends are shocked.”

BFFs — was it wrong of Jen to steal Justin from Heidi?

- Lindsey DiMattina

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Not ‘cool’ Jen. How could you cause someone else the pain that you once went through?

Is Jennifer Aniston just as much of a man thief as her arch-nemesis Angelina Jolie? New reports indicate that she stole new BF Justin Theroux from his longtime girlfriend Heidi Bivens — which is exactly what Angie did back in 2005 by snagging Jen’s then-husband Brad Pitt. If the rumors are true, shame on you, Ms. Aniston!

Jen finally went public with her Wanderlust co-star at a MTV Movie Awards afterparty in early June, causing a public outcry when the world realized her virtually unknown new man already had a girlfriend.

“Heidi and Justin have been together for 14 years,” a rep for Bivens told the Page Six. “They met when she was 20 years old and he 24, and yes, she just moved out of their home last weekend. She has no comment.” Ouch!

A source close to Justin’s ex added, “Heidi is heartbroken. She was completely blindsided. She and Justin had been together for years, they had a home. Then he met Jennifer and everything changed. At first he claimed he and Jen were friends.”

However, a friend of Justin’s swears up and down that things were over between he and Heidi before his love affair with Jen heated up. Whatever the case, the time in between relationships definitely raises eyebrows.

When Angelina began dating Brad, her Mr. & Mrs. Smith co-star, immediately after he and Jen announced their divorce, eyebrows were also raised. Jen, who is notoriously reticent about sharing her feelings with the media, dubbed Angie’s move “not cool.” So how could she possibly do this to someone else?

When you’ve been cheated on, you’re at your lowest. You find it impossible to believe that someone you loved so much could betray you so badly.

I’m baffled that Jen, quite possibly the world’s most famously cheated-on spouse, could inflict this pain on someone else. Even if Justin and Heidi were over, the ink had barely dried on the death of their relationship. They should have waited before dating. She should have made sure it was really over.

Jen needs to remember that when a guy cheats — or when a guy who’s been dating the same woman for 14 years and that callously starts dating someone else the second he has a shot at upgrading — he’ll do it again. That old adage is relevant for a reason: Fool me once, shame on you. Fool me twice, shame on me. Jen, you’re being a fool.

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Jen is acting just like Angelina after stealing her new man from his live-in girlfriend — who just moved out of the couple’s home last weekend!

Jennifer Aniston may have earned the sympathy of millions when Angelina Jolie stole her former husband Brad Pitt from right out under her, but it seems Jen has no problem doing the same! A rep for Heidi Bivens, the ex of Jen’s new man Justin Theroux, tells Page Six: “”Heidi and Justin have been together for 14 years. They met when she was 20 years old and he 24, and yes, she just moved out of their home last weekend. She has no comment.” Ouch!

Another source goes on to say, “Heidi is heartbroken. She was completely blindsided. She and Justin had been together for years, they had a home. Then he met Jennifer and everything changed. At first he claimed he and Jen were friends.”

A friend of Justin’s denies all this however, saying: “Things were already over between [Justin] and Heidi before he got close to Jen.”

Jen and Justin have been spotted all over LA recently, making their first public appearance at Soho House following the MTV Movie Awards June 5.

Jen and Brad Pitt split in 2005 with Jen later calling Angelina’s behavior “uncool” in a 2008 Vogue story.

So what do you think HollywoodLifers, is Jen behaving just like Angie?