fall in love
Become enamored. This expression may be used either literally, as in John and Mary fell in love on their first date, or hyperbolically, as in I fell in love with that antique chest. [First half of 1500s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.