make advances to
make advances to (one)
To approach one in a flirtatious, amorous, or sexual manner; to try or begin to seduce one. Terry was fired after he began making advances to his secretary. I really wish I could go out to a bar or a club without a half dozen men making advances to me.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
make advances to someoneand make advances at someone
to flirt with someone; to begin to seduce someone. She began making advances to me, and I left the room. Mary made advances at every male she encountered.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.