Lily Allen's ex-Boyfriend "Worried Sick" Over her Outrageous Behavior

Lily Allen's ex-boyfriend is said to be alarmed by her recent outrageous behavior and drunken antics.

Lily, 23, has spent the past few weeks partying in the South of France, flirting with guys and sunbathing topless in a bid to make her ex jealous.

But, according to friends, Chemical Brothers star Ed Simons -- with whom she broke up with earlier this year -- is growing increasingly concerned for the 'Smile' singer.

One said, "Ed is worried sick about Lily. When he sees pictures of her blind drunk and clearly unhappy, he wants to look after her.

"Lily has told friends she wants Ed back and, although he still loves her, he's reluctant because of her mood swings, which he found hard to cope with.

"He knows she's always been a party animal, but he wants her to tame her drinking before she loses control."

When she arrived in France a week ago, Lily went a boozy rampage, and was later kicked off a yacht party for drunkenly stripping, and a few days later she passed out on a table at a posh nightclub. Her dad, British comedian Keith Allen, tried to take her home, but she reportedly lashed out, striking him in the face.

The source adds to Britain's Closer magazine, "Lily was on a mission to get plastered.

"She was swigging cocktails, and even her friends told her she'd had enough. She wanted men to look at her, but most guys there were put off.

"She basically drank herself unconscious, passing out on a table. Later, she started vomiting and was dragged home by her dad."