Sweep somebody off their feet - Idioms by The Free Dictionary
sweep somebody off their feet
sweep (one) off (one's) feet
To charm one in such a way that they form an instant and strong romantic attraction, usually unexpectedly. A: "Is Lucy still gushing about her new boyfriend?" B: "Yeah, he must have really swept her off her feet."
sweep somebody off their ˈfeet attract somebody very strongly because you are exciting, charming, etc: She’s waiting for a nice young man to come and sweep her off her feet. ♢ I was swept off my feet by her wit and charm.