True. Whenever there was a chance he didnt come forward to say it. Losing vijaya and most importantly his respectable family life is not so easy for him, neither for vijaya.Now in few words he's only having an excuse each and everytime he has to say the truth of Nandini to Vijaya because he simply does not want to say it or does not want to lose Vijaya.
So true he needs not give an explanation to only Vijaya but to Neeti + each members of the family...