make love
make love {v. phr.}
1. To be warm, loving, and tender toward someone of the opposite sex; try to get him or her to love you too.
There was moonlight on the roses and he made love to her in the porch swing.
2. To have sexual relations with (someone).
It is rumored that Alfred makes love to every girl he hires as a secretary.
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Source: A Dictionary of American Idioms