Lieutenant Governor Timothy P. Murray today strongly denied that there was anything improper in his relationship with the former Chelsea Housing Authority director who resigned abruptly after the Globe revealed that he was making $360,000 a year. Murray and former Chelsea Housing director Michael E. McLaughlin called each other 83 times over the past seven months, McLaughlin’s cell phone records show, including several calls after the Globe began asking questions about McLaughlin’s salary, which he had reported to the state was only $160,000. McLaughlin resigned on Nov. 3, but not before co-signing checks to himself for more than $200,000 for what he said was unused vacation, sick and personal time.