while hagues sexual orientation is his own business, and a matter for him to deal with behind closed doors, there are two elements that concern the rest of the good ol' british public.
first, the key question is that of 'integrity'. the man is foreign secretary and an elected MP based on his suggested integrity. if he HAS been entertaining himself with the assistance of a 25 year old man while he is married, the wider question of integrity will be inevitably asked, as it was with simon hughes, deputy leader of the lib dems when he was found guilt of spending his 'hard-earned' on a rentboy from time to time. not to mention the massive error of judgement a man in his position with his responsibility really shouldnt be making.
secondly, the coalition government, and in particular 'diamond dave', has said in the wake of expenses and civil servant scandals that they will reduce the number of special advisors the government currently entertains. with the inclusion of this controversial character at hague's side, this means he has three special advisors... those previously in his job have only had two. not quite in keeping with the party line.