Sentence:  For Northton's young males, to " get over " on a woman -- that is, to lure her into sex with vague promises of love and marriage; to <WSD>get over on</WSD> a woman and, particularly, to impregnate one (or three or five), and to " get away without being held legally accountable for out-of-wedlock children " is to prove strength, virility, and status. To a number of underclass youths, love is only another hustle. 
Meaning of the word marked with <WSD> tags:  To have sex with.