Justin Theroux walks his dog … after wishing ex Jennifer Aniston a happy 52nd birthday

Justin Theroux used Instagram to honor his ex-wife Jennifer Aniston in celebration of his 52nd birthday on Thursday.

And hours after posting, the 49-year-old actor was spotted walking around New York City with his beloved rescue dog Kuma.

Theroux faced the snowy weather with a black jacket that showed a Pit Bull design on the back.

They see me walking: Justin Theroux was seen walking around New York City with his beloved rescue dog Kuma

They see me walking: Justin Theroux was seen walking around New York City with his beloved rescue dog Kuma

He put the jacket over a black hooded sweatshirt and pulled on a pair of worn jeans.

In order to walk through the snow, Theroux put on a pair of stylish combat boots.

Adding a little more warmth to her ensemble, the Mulholland Drive star wore a black hat and a pair of leather gloves with red accents.

To adhere to the COVID-19 protocols, Justin kept his mouth and nose hidden with a face mask.

Responsible: To follow the COVID-19 protocols, Justin kept his mouth and nose hidden with a face mask

Responsible: To follow the COVID-19 protocols, Justin kept his mouth and nose hidden with a face mask

To stay warm: Theroux braved the snow in a black windbreaker jacket with a Pit Bull design on the back

To stay warm: Theroux faced the snowy weather with a black windbreaker jacket that featured a Pit Bull design on the back

Justin walked down the sidewalk and through several piles of snow with Kuma’s guide wrapped around his hand.

Kuma, who Theroux frequently displays on his Instagram, looked adorable in a padded dog jacket while trotting alongside his owner.

For his birthday tribute to Jennifer, Justin shared a glamorous photo of his ex-partner climbing a spiral staircase with a mirrored wall and wrote: ‘[heart] you B! ‘

All that sweet affection: Justin Theroux wished his ex-wife Jennifer Aniston a happy 52nd birthday on Thursday

All that sweet affection: Justin Theroux wished his ex-wife Jennifer Aniston a happy 52nd birthday on Thursday

It is not known why the star of The Leftovers usually calls her by the nickname B, since the letter is not in her initials – her middle name is Joanna.

The two got married from 2015 to 2017, but managed to remain friendly after what Justin previously called a ‘smooth breakup’.

The Friends icon cast a look over her shoulder as she climbed the stairs while modeling a long flowing coat.

They announced their separation in February 2018 and a few months later Justin told the New York Times about how friendly the process had been.

The way they were: the couple married from 2015 to 2017, but managed to maintain their friendship after what Justin previously called a 'soft breakup';  pictured in 2015

The way they were: the couple married from 2015 to 2017, but managed to maintain their friendship after what Justin previously called a ‘soft breakup’; pictured in 2015

“The good news is that it was probably the most – I am choosing my words very carefully – it was the most gentle separation, as there was no animosity.”

The Tropic Thunder writer added: ‘In a strange way, just navigating the inevitable realization of this is the exhausting part.’

Justin, who is three years younger than Jennifer, married her at Bel-Air in 2015 and they split up about two years later.

Justin and Jennifer started dating in 2011, having worked together on the film Wanderlust. He maintained a 14-year relationship with costume designer Heidi Bivens, which collapsed in 2011.

At the time, E! The News claimed that Heidi had been, according to a friend of hers, ” completely abandoned ”, although the report qualified: ‘Doesn’t that mean it’s Aniston’ s fault, maybe the moment was just terrible? ‘

As seen in 2001: Last year, the public saw how much Jennifer's relationship thawed with her first husband, Brad Pitt, who left her for Angelina Jolie in 2005

As seen in 2001: Last year, the public saw how much Jennifer’s relationship thawed with her first husband, Brad Pitt, who left her for Angelina Jolie in 2005

‘Things were over between him and Heidi before he got close to Jen,’ a source on Justin’s team insisted to Page Six.

Heidi’s mother, Marilyn, spoke to Radar Online in 2016, claiming that Justin initially tried to persuade Heidi that he and Jennifer were not a couple.

Marilyn said, ‘Heidi told me what Justin had said to her, that something was going to be written about him and Jennifer, that something was going on between them and he wanted her to know it was nothing, there was nothing about it.’

Ultimately, Heidi discovered that the rumors were true, ‘And my sweet Heidi, she calls me and says,’ Oh mommy ‘. I was experiencing cancer at the time. It was a time that hurt our family. ‘Marilyn remembered.

So sweet: Jennifer was seen having a friendly conversation backstage at last year's SAG Awards with her first husband, Brad Pitt

So sweet: Jennifer was seen having a friendly conversation backstage at last year’s SAG Awards with her first husband, Brad Pitt

Last year, the public saw how much Jennifer’s relationship thawed with her first husband, Brad Pitt, who left her for Angelina Jolie in 2005.

Brad and Jennifer won acting trophies last January at the SAG Awards – where he made a joke on stage about their failed marriages.

He sarcastically vampired that it had been “difficult” to play a “guy who gets high, takes off his shirt and doesn’t get along with his wife” in Once upon a time in Hollywood.

The camera then cut to the audience where her Jennifer applauded the joke and showed an expression of ironic recognition.

She and Brad were seen having a friendly conversation behind the scenes – and as she walked away, she put her hand on his chest and he briefly held her wrist.

What a moment: when she walked away from him after the conversation, she put her hand on his chest and he could be seen holding her wrist

What a moment: when she walked away from him after the conversation, she put her hand on his chest and he could be seen holding her wrist

.Source