Does My Husband Still Love Me? How to Stop Groping in the Dark?

How nice it would have been if only I knew what is going on in my husband's mind! But alas, does my husband still love me, seems to be an overwhelming thought that is causing sleepless nights of late. We have been married 'happily' for some years now and such questions never dawned on me till recently, when I somehow felt that things were not quite the same between him and me...