Supermodel Kate Moss can take no more of her boyfriend's craziness, and especially not after his latest arrest for possession. Pete Doherty, frontman for The Babyshambles, was again detained for possession of cocaine last week in London, despite having come out of rehab only weeks before.

The latest rumor about the two star-crossed lovers says that the model is already considering breaking off the engagement with the rocker, because he crossed the line too many times for her to trust him again. Besides, he also broke her heart with not abiding by the six commandments he made known to him a while ago.

Decided not to be taken for granted again, Kate is said to have presented Pete with a final ultimatum (as absurd as this may seem), according to which he must choose between his loser friends and her. A friend spoke to the British 'Daily Mail' and said that Pete is too far gone to mend now.

'He's one step away from ripping the implant which helps him stay off heroin out of his arm and going back on the smack. We've tried to keep him away from the bad influences. For a while he wasn't seeing any of the old dodgy crowd. These are the people he was hanging around with at the depths of his addictions, when he was really f**ked up. But he's back in touch with his old friends and he's hanging around the East End driving his beaten-up Jaguar, off his head', the source said about Doherty's recent behavior.

The same spy also added that not even Kate can keep the rocker off his old habits, and that even includes having sex with his many groupies. 'Pete knows he's dating the most beautiful woman in the world but even that doesn't seem to be enough', the tab quotes the source as saying.

Whether charges will be filed against Doherty or not, it is yet to be seen. We'll keep you posted with the latest on the Moss-Doherty state of affairs.