NEW YORK: Lea Michele has offered her support to Zac Efron following his recent rehab stint. The ‘Glee’ actress - whose boyfriend Cory Monteith died from a heroin and alcohol overdose in July - has reached out to her ‘New Year’s Eve’ co-star following revelations he has been battling cocaine addiction and has vowed to do her best to help him stay sober. A source said: ‘’Lea called Zac and told him, ‘I’m here if you need me’. She urged him to get serious about having a 24-hour sobriety coach and to only spend time with people who care about his welfare.–Expo