Wiktionary
fall for
vb. 1 (context idiomatic English) To be fooled; to walk into a trap or respond to a scam or trick. 2 (context idiomatic English) To fall in love with someone.
WordNet
fall for
v. fall in love with; become infatuated with; "She fell for the man from Brazil"
be deceived, duped, or entrapped by; "He fell for her charms"; "He fell for the con man's story"