Britney Spears has angered her ex-boyfriend Justin Timberlake with the slew of bombshell allegations about their time together, according to insiders, who claim the pop princess ‘doesn’t care who is offended’.

Britney, 41, opened up a Pandora’s box with her new memoir The Woman in Me, in which she claims she had an abortion, aged 19, because Justin ‘wasn’t ready’ to be a father – before accusing him of cheating on her with a celebrity and ending their three-year relationship with a text message.

The NSYNC frontman, 42, has reportedly refrained from contacting Britney to voice his upset at the fall out – the stress of which is said to have blighted his wedding anniversary celebrations with Jessica Biel.

‘Justin has not reached out to Britney at all about any of this and he is not going to because there is nothing he can say to her,’ a source close to the Toxic singer told DailyMail.com exclusively. ‘She was there and is just telling it from her point of view.

Justin Timberlake, 42 (seen at VMA's in 2003) has not contacted ex Britney Spears, 41, regarding shocking cheating and pregnancy claims about him in her memoir The Woman In Me

Justin Timberlake, 42 (seen at VMA’s in 2003) has not contacted ex Britney Spears, 41, regarding shocking cheating and pregnancy claims about him in her memoir The Woman In Me

A source tells DailyMail.com exclusively, Justin (with Britney in January 2002) ' is not at all happy about what has come out of this book so far'

A source tells DailyMail.com exclusively, Justin (with Britney in January 2002) ‘ is not at all happy about what has come out of this book so far’

Britney releases her highly-anticipated memoir The Woman In Me on October 24

Britney releases her highly-anticipated memoir The Woman In Me on October 24

EXCLUSIVE: Britney Spears auditions for The Notebook in 2002

‘That does not mean he is okay with it. Justin is not at all happy about what has come out in this book.’

They added: ‘Doing this book has given Britney life and she really doesn’t care who is offended by anything in it because it is what happened.

‘She was there and lived through it. No one can say anything. She has got this all out of her and is moving on now.’

A second insider claimed the ‘baggage’ from Britney’s memoir has been ‘stressful’ for Justin and his wife Jessica, whose wedding anniversary on October 19 was overshadowed.

The pair tied the knot in 2012, a decade after his split from Britney. They share sons Silas, eight and Phinneas, three.

‘Britney’s book coming out with all the revelations coming from it has not been the best for his anniversary celebrations,’ they said. ‘Having it in the zeitgeist hasn’t been a topic of constant conversation but Justin and Jessica have definitely talked about it.

‘And to have to think of all of that during a time when they should celebrate their love for each other hasn’t been the most satisfying of days lately, it has been a bit stressful.’

They claimed he is trying to focus on NSYNC’s new music and his upcoming film, adding: ‘He is trying to figure it out and avoid the naysayers.’

DailyMail.com has reached out to reps for Britney and Justin.

The couple dated from 1999 until 2002 when their split was announced to increasing rumors that Britney had been unfaithful.

Justin appeared to bolster the narrative with his 2002 hit Cry Me a River in which he sings: ‘You don’t have to say, what you did / I already know, I found out from him / Now there’s just no chance / For you and me.’

The singer even went so far as to hire a Britney look-a-like for the music video.

Britney and Justin (dressed in matching denim at the 2001 AMA's) split in 2002 amid rumors that Britney cheated on Justin

Britney and Justin (dressed in matching denim at the 2001 AMA’s) split in 2002 amid rumors that Britney cheated on Justin

The Toxic singer reveals in The Woman In Me that Justin (seen together in interview in 2000) convinced her to have an abortion after she got pregnant

The Toxic singer reveals in The Woman In Me that Justin (seen together in interview in 2000) convinced her to have an abortion after she got pregnant

Britney writes about that period in time and describes the Cry Me A River video as ‘a woman who looks like me cheats on him and he wanders around sad in the rain’.

She went on to write that the media attention the video got turned her into a ‘harlot who’d broken the heart of America’s golden boy,’ when she was actually ‘comatose in Louisiana’ nursing a broken heart while Justin was ‘happily running around Hollywood’.

The mother-of-two has confessed to cheating on her ex by kissing her choreographer Wade Robson in a bar – but she also hinted that Justin was unfaithful on multiple occasions – including with a celebrity whose identity she has refrained from exposing.

She wrote that the What Goes Around Comes Around hitmaker was photographed with ‘one of the girls from All Saints’ in London in 2000 and also bragged to one of her backup dancers about a girl he hooked up with in Las Vegas.

Britney has also opened up in harrowing detail about the abortion she underwent in secret at home when she was just 19.

A separate source previously told DailyMail.com that Justin had hoped that their decision to terminate the pregnancy would have remained a ‘secret forever’.

‘Justin thought that the decision that they made was a decision made together and he intended to never talk about it and for it to be kept their secret forever,’ they said.

‘Now that Britney has mentioned it, and it will live forever in her book and whatever else she decides to mention, Justin is going to try not to say anything about it because he knows whatever he says from this point will likely be thrown back right at him.’

Britney made the ‘agonizing’ decision to terminate the pregnancy after conceiving in late 2000.

She wrote: ‘It was a surprise, but for me, it wasn’t a tragedy. I loved Justin so much. I always expected us to have a family together one day. This would just be much earlier than I’d anticipated.

Justin with his wife Jessica Biel with whom he has sons Silas, eight and Phinneas, three

Justin with his wife Jessica Biel with whom he has sons Silas, eight and Phinneas, three

Justin and Jessica tied the knot in 2012 - a decade after he split from Britney (pictured, in 2022)

Justin and Jessica tied the knot in 2012 – a decade after he split from Britney (pictured, in 2022)

As fans know, Justin (seen in concert in 2014) accused Britney of cheating on him following their breakup with his hit song Cry Me A River

As fans know, Justin (seen in concert in 2014) accused Britney of cheating on him following their breakup with his hit song Cry Me A River

Extracts from Britney Spears’ upcoming leaked memoir

‘He said we weren’t ready to have a baby in our lives, that we were way too young. I’m sure people will hate me for this, but I agreed not to have the baby.’

In the years following their breakup, Justin was not very kind when it came to speaking about their past relationship.

During a 2003 interview with Barbara Walters on 20/20, the legendary journalist asked him if Britney had ‘kept her promise to wait to have sex until marriage’. Justin immediately burst out laughing.

A few years later, in 2006, he told journalist Robert Haskell: ‘If I was writing an article about [Britney], I would not be able to fight the urge to write every dirty thing about her.’

In recent years, Justin has shown regret for his past treatment of Britney and publicly apologized to her in 2021 following the release of the FX and Hulu documentary, Framing Britney Spears.

He issued an apology to both his ex – and music icon Janet Jackson – for ‘missteps’ during his career that he admitted contributed to ‘a system that condones misogyny and racism’.

‘I’ve seen the messages, tags, comments and concerns and I want to respond,’ he wrote. ‘I am deeply sorry for the times in my life where my actions contributed to the problem, where I spoke out of turn, or did not speak up for what was right.’

Months later, he went on to show support for Britney amid her battle to put her 13-year conservatorship to an end. She was placed into the guardianship by her father, Jamie Spears, in 2008.

At the height of the #FreeBritney movement, Justin tweeted: ‘No one should ever be held against their will… or ever have to ask permission to access everything they’ve worked so hard for.’

Speaking on behalf of himself and his wife, Jessica, he then added: ‘Jess and I send our love, and our absolute support to Britney during this time. We hope the courts, and her family make this right and let her live however she wants to live.’