A US magazine claims Jessica Simpson and Nick Lachey separated over the weekend, prompting representatives for the couple to issue statements denying a break-up. Celebrity gossip magazine US Weekly’s cover story says it was Nick who called the marriage off, and ran a headline declaring, “Details on Jessica & Nick’s last days — and how her ego, partying and dad drove them apart.” A source says, “Nick’s fed up with not being able to trust her, with her constant partying, how much money she spends and who she spends her time with.” For the past year, rumours have dogged Nick and Jessica who may or may not celebrate their third anniversary on 26 october.