Chris Martin must really like gold-plated juicers!

The Coldplay frontman, 37, accompanied his soon-to-be ex-wife, Gwyneth Paltrow, on her trip to Dallas, where she opened a Goop pop-up shop. Despite their "conscious uncoupling" earlier this year, the British singer was in attendance, along with their two kids, at the actress's book signing at the store on Saturday.

As Gwynnie, 42, put her John Hancock on copies of My Father's Daughter and It's All Good in the Highland Park Village shop, Martin — who was casually dressed in black pants, a gray top, and black cap — hung out with Apple, 10, and Moses, 8, and checked out the store's offerings. He kept a low profile though and didn't interact with the shoppers. An eagle-eyed fan saw him through the storefront glass and snapped a photo.

Paltrow and Martin have continued to spend time together after their split, but running across the street — he purchased a house a stone's throw from the blonde in Brentwood, California — and traveling 1,200 miles together are two different things. Their continued close relationship (he also threw her a birthday party in September) was reportedly one of the reasons that Martin's relationship with Jennifer Lawrence ended.

This latest sighting goes along with what they've said all along about parting amicably and remaining friends. As Martin said in July, "The thing we told everyone at the beginning of the year is true. We are very close. We are not together. But we're, you know, that's the truth and that's it."

He added, "You know, there's a lot of love. No scandal, I'm afraid. I wish I could give you scandal."

When Paltrow isn't hanging out with her estranged husband, she's been busy building her brand. The lifestyles guru opened the Goop pop-up store for the holidays and recently released the site's holiday gift guide, which included some typically ridiculous items, including the Easy Health Angel Juicer plated in 24K gold ($4,739) and Esque's Diamond Thickie vase ($12,000).

Related: Upscale and Overpriced: Gwyneth Paltrow's 2014 Goop Gift Guide Has Arrived

She has to pay for her ex to travel to Dallas with her on business somehow, now doesn't she?