make love to

   to copulate with

   In gentler times, it meant no more than to court:

    ... generally they had made love to her, and, if they did not, she presumed they did not care about her, and gave them no further attention. (Somerville and Ross, 1894, describing a flirt)

   Now standard English:

    He should make love to her, or, in the parlance, screw her. (Masters, 1976)

   Also relating to homosexual activity:

    The allegation that (Burgess) had ever made love to Maclean...(Boyle, 1979)

   To make love to yourself is to masturbate:

    She sometimes made love to herself on the bath mat. (M. McCarthy, 1963)