Jennifer Aniston wishes Courteney Cox's longtime boyfriend Johnny McDaid a happy 48th birthday on Instagram

In real life, Jennifer Aniston's close-knit circle of friends includes their partners as well.

As Courteney Cox marked boyfriend Johnny McDaid's 48th birthday in a sweet Instagram post on Wednesday, her Friends co-star joined the celebration in the comments section.

'Happy Birthday JMD!' wrote Aniston, 55, in a comment.

Cox, 60, who has dated the Snow Patrol artist since 2013, shared some recent throwbacks of the birthday boy.

'Happy birthday to the man who can do most anything. I love you always J. PS. He threw it back,' wrote Cox of a photo of them on a fishing trip.

As Courteney Cox marked boyfriend Johnny McDaid's 48th birthday in a sweet Instagram post on Wednesday, her Friends costar Jennifer Aniston joined the celebration in the comments section

As Courteney Cox marked boyfriend Johnny McDaid's 48th birthday in a sweet Instagram post on Wednesday, her Friends costar Jennifer Aniston joined the celebration in the comments section

'Happy Birthday JMD!' wrote Aniston, 55, in a comment

'Happy Birthday JMD!' wrote Aniston, 55, in a comment

Cox's Cougar Town costar Christa B. Miller also got in on the festivities. 'Happy Birthday Johnny!' she commented. 

'Happy birthday!!!!' wrote Rita Wilson. 'Happy birthday love love to you both,' Rosanna Arquette commented. Leslie Mann and Rob Thomas also commented with emojis.

Cox has dated McDaid since late 2013, announcing their engagement the next year.

Although the pair called off the engagement soon after, they've remained a couple for the past decade.

The Golden Globe nominee was previously married to Scream costar David Arquette from 1999 to 2013, and they share daughter Coco, 20. 

Following McDaid's big day, Aniston celebrated fellow Friends co-star Matt LeBlanc's 57th birthday on Thursday. 

'Happy birthday @mleblanc,' she wrote on her Instagram Story. 'I hope you're doing so much nothing today! LOVE YOU.'

The Morning Show star included a video of LeBlanc admitting in an interview that his 'absolute favorite thing in the world to do is nothing.' 

'I'm great at it. I should be a professional nothing. That's what I would be, I would be really good at that. Because it's so easy. There's no rules.

'Happy birthday to the man who can do most anything. I love you always J. PS. He threw it back,' wrote Cox of a photo of them on a fishing trip

'Happy birthday to the man who can do most anything. I love you always J. PS. He threw it back,' wrote Cox of a photo of them on a fishing trip

Following McDaid's big day, Aniston celebrated fellow Friends costar Matt LeBlanc 's 57th birthday on Thursday

Following McDaid's big day, Aniston celebrated fellow Friends costar Matt LeBlanc 's 57th birthday on Thursday

Friends ran for 10 seasons on NBC from 1994 to 2004, and the cast reunited an HBO Max special in 2021

Friends ran for 10 seasons on NBC from 1994 to 2004, and the cast reunited an HBO Max special in 2021

'"What are you gonna do today? I'll tell you. Nothing."' added LeBlanc. 'It's that simple.'

Friends ran for 10 seasons on NBC from 1994 to 2004, and the cast reunited an HBO Max special in 2021.

The cast celebrated the finale's 20th anniversary earlier this year, a bittersweet milestone without costar Matthew Perry, who died at age 54 in October.