Newly single Dakota Johnson is so busy mingling on a girls' trip aboard a yacht in the Mediterranean with Kate Hudson and a few hot guys – including Tom Brady – that she's completely ignoring her ex Chris Martin 's pleas to take him back, RadarOnline.com can reveal.

Sources said the Fifty Shades of Grey alum, 35, is having the time of her life while the Coldplay frontman, 48, struggles to move on. Article continues below advertisement

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"Chris is absolutely lost without her," said an insider. "He didn't realize how much he depended on Dakota until she walked away.

"He's been trying to call her, sending messages, trying to start things back up, but she's not reall

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