It’s time for a pair of Pittsburgh Steelers to grow up and stop acting like drunken college boys before they further tarnish the team’s image. Quarterback Ben Roethlisberger and kicker Jeff Reed have made headlines recently for all the wrong reasons. It’s OK to have fun, but one has to know the boundaries. Georgia police are investigating a 20-year-old woman’s claim that Roethlisberger sexually assaulted her in a nightclub. Roethlisberger’s lawyer has denied any sexual assault happened, and the quarterback has not been charged. Roethlisberger, like others accused, deserves a presumption of innocence, but it’s hard to understand how he could put himself in a situation in which such an allegation could be taken seriously. One would think his guard would be up after being sued last year by a woman who claims he raped her in 2008 at a Lake Tahoe hotel, an accusation that Roethlis­berger strongly denies. He has filed a countersuit against the woman.