“[She Stoops to Conquer] seems to be a comedy of pure plot; yet there is also psychological acuity under the mathematical ingenuity. This is seen most clearly in the character of Marlow, who is painted as a palpable victim of the English class system. His dilemma is that he is a tongue-tied wreck amongst women of his own class but brimming with sexual bravura with a barmaid or college bedmaker. He himself expresses his dilemma with painful clarity:

MARLOW: My life has been chiefly spent in a college or an inn, in seclusion from that lovely part of the creation that chiefly teach men confidence. I don't know that I was ever familiarly acquainted with a single modest woman except my mother. But among females of another class, you know -

HASTINGS: Ay, among them you are impudent enough of all conscience.

Marlow himself rightly calls this 'the English malady': a paralysing fear, resulting from a monastic education, of women of his own class and an ability to be at ease only with social inferiors whom he can bully, dominate or treat as purchasable commodities. It took an observant Irishman to pin down the damage done to the English male psyche by a punitive educational system.

[...]

And there is further evidence of Marlow's split personality when Kate accosts him in the guise of a household drudge. Marlow the psychological wreck turns into a brazen lech who, within seconds, is asking to taste the nectar of Kate's lips. Not only that. He is soon bragging of his sexual exploits at a louche London club attended by the likes of Mrs Mantrap, Lady Betty Blackleg, the Countess of Sligo, Mrs Langhorns and old Miss Biddy Buckskin.”