A Wrong Way to Love (1969)

Anna, personal secretary of a wealthy industrialist, falls in love with her boss' daughter's leftist boyfriend Carlo and basically severs her ties with her boss (with whom she has also been intimate). After she moves in with college-student Carlo she attempts to provide for them both, but she can't find another job and sinks into the sleazy world of drugs and prostitution. Carlo's right-wing brother demands that Carlo return to the powerful businessman's daughter so he will have financial freedom for the rest of his life.