A council leader was reported to the procurator fiscal by police over an alleged indecency with another man, it has emerged.
Gordon Matheson, 46, leader of Glasgow City Council, confessed to cheating on his partner and apologised for the "hurt and embarrassment" caused.
Prosecutors have decided to take no action against Mr Matheson over an alleged incident in the Cathcart area of the city around two weeks before Christmas.
A spokeswoman for Strathclyde Police said: "We can confirm that two men, aged 46 and 38, were the subject of a report to the procurator fiscal in relation to an alleged indecency in the Cathcart area of Glasgow on December 12, 2012."
In a statement, Mr Matheson, a Labour councillor, said: "I have been having an affair. I have not lived up to my own standards and my loving partner deserves much better.