Definition 1 of 1
'Groping in darkness' is an expression of human ignorance;
'Groping in daylight' is an expression of human knowledge, of anatomy of course; but 'Groping with half-closed eyes in secure privacy' is bliss!. Doesn't bliss lie in the region between ignorance and knowledge?
(First they grope the girl, if she proposes marriage they lift their hands up!, this is what boys of this age do!)