From Longman Dictionary of Contemporary Englishsweep somebody off their feetsweep somebody off their feetRELATIONSHIPto make someone feel suddenly and strongly attracted to you in a romantic way Jill’s been swept off her feet by an older man. → sweep
Examples from the Corpus
sweep somebody off their feet• Donald absolutely swept me off my feet.• Then Peter came into my life and swept me off my feet.• She's just waiting to be swept off her feet by a handsome stranger. 