Friendly Exes! Justin Theroux Wishes Jennifer Aniston a Happy Birthday: 'Love You B!'

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Justin Theroux has kept up his sweetest tradition.

The actor wished ex-wife Jennifer Aniston a happy birthday on Thursday, just like he has every year since their 2018 split.

This year, Theroux, 49, shared a black-and-white photo of Aniston, 52, on a large staircase on his Instagram Story, sending love to Aniston using his sweet nickname for her.

"Happy birthday @jenniferaniston," Theroux wrote at the top of the image.

"[Love] you B!" he added at the bottom, using a red heart emoji in the message.

Aniston and Theroux first started dating in 2011 and got engaged the next year before tying the knot in a backyard ceremony in August 2015. They later announced their split in early 2018.

RELATED: Justin Theroux Breaks Silence on Jennifer Aniston Split: 'It Was Heartbreaking' Yet 'Gentle

Justin Theroux/Instagram

Months later, Theroux broke his silence on the split, revealing that the two went their separate ways without any hostility.

"The good news is that was probably the most — I'm choosing my words really carefully — it was kind of the most gentle separation, in that there was no animosity," he explained to The New York Times.

"Again, neither one of us is dead, neither one of us is looking to throw hatchets at each other," he added. "It's more like, it's amicable. It's boring, but, you know, we respected each other enough that it was as painless as it could be."

That doesn't mean there wasn't sadness for Theroux and Aniston.

"It was heartbreaking, only in the sense that the friendship would not be the same, as far as just the day to day," Theroux said. "But the friendship is shifting and changing, you know, so that part is something that we're both very proud of."