Dozens of friends, fans and colleagues gathered at the crash site in Santa Clarita, California where Paul Walker tragically died on Saturday, but few were as shaken up as his Fast & the Furious co-star Tyrese Gibson. 
The actor broke down in tears at the sight of the wreckage left behind from the single car collision that sent Walker's Porshe up in flames and instantly killing both him and the driver of the vehicle, his pal Roger Rodas. 
"At least I got to say I love you," Gibson later posted on Instagram. "Our laughs and moments will live forever...but this I just don’t understand...please pray for his daughter and family."

The actor also commented on the fate of the immensely successful Fast & Furious franchise (the seventh installment of the series was in production at the time of Walker's death): "Fast family around the world we live you and we love you. Paul is the heartbeat of this franchise and were gonna see to it that his energy and presence lives on forever, #myhearthurtssobad."
Before leaving the crash site, Gibson left a yellow rose and took a piece of debris to remember his friend. 
Meanwhile, more tragic details are emerging about the accident. An eyewitness tells E! News, Paul Walker and his friend Roger Rodas drove off in his Porsche from the site of a charity event when moments later everyone — including Walker's daughter and Rodas' son — heard a loud massive explosion. “They kept his daughter off to the side, so she wouldn’t know what was going on until they really know what had happened," the source says, adding that the 15-year-old "was in pieces" when she found out.
Celebs have been pouring their hearts out on Twitter about the tragedy, expressing both disbelief and sadness. Kevin Hart, Michael B. Jordan and Dwayne Johnson are just some of the actor's friends who tweeted condolences. The 40-year-old, who kept a low profile and was rarely seen in the tabloids, was known as one of the most easy-going actors in Hollywood.
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 (Photo: Stuart C. Wilson/Getty Images for Universal Pictures)