From Longman Dictionary of Contemporary Englishfall for somebody/something phrasal verb informal1 TRICK/DECEIVEto be tricked into believing something that is not true He is too smart to fall for that trick.2 LOVEto start to love someone That was the summer I worked at the fairground, and met and fell for Lucy.3 to like a place as soon as you see it → fall→ See Verb table
Examples from the Corpus
fall for • Computer, software and semiconductor shares fell for a second day.• More than 7 stocks fell for every 4 that rose on the New York Stock Exchange.• Cleese, 52, fell for her after his divorce two years ago from his second wife, film director Barbara Trentham.• I still fell for it, as one still falls for the oldest literary devices in the right hands and contexts.• She grabs a pass from Sally, throws her signature head fake to see if her defender will fall for it.• I had fallen for the oldest James Brown/James Brown joke in the book.• Surely she hadn't almost fallen for the oldest trick in the book!• The Constitution fell for their story and put it on the front page, with a picture of the dead monkey. 