Chris Martin and Gwyneth Paltrow spent Valentine's Day together on Saturday (14.02.15).
The former couple, who split last March after 10 years of marriage, were spotted spending time with their children, Apple, 10, and Moses, eight, at the beach in Malibu, California.
A source said that the Coldplay frontman, 37, who is now dating Jennifer Lawrence, 24, and his estranged wife, 42, spent approximately two hours together.
But the insider told E! News that their reunion "was nothing romantic for what it seemed, just surf lessons for the kids."
Meanwhile, Jennifer spent the day in Boston, where she is preparing to start filming her upcoming movie, 'Joy,' alongside Bradley Cooper and Robert De Niro.
The couple were thought to have split in October, but a source previously insisted they only told people they had split so they could enjoy a relationship out of the spotlight.
The insider said: "Neither of them wanted to be a public couple so quickly.
"So they told people they were broken up while they continued to build a relationship."
Gwyneth, who is dating 'Glee' co-creator Brad Falchuk, 43, recently admitted she and Chris began making plans to separate in 2012 and "worked really f**king hard to get to [this] point."
She added: "But we're very, very close, and it's so nice. I feel like it's, in a way, the relationship we were meant to have."