under someone's spell

under (someone's) spell

Influenced or controlled by someone because one finds that person fascinating, enchanting, or seductive. Our son never acted out like this before he fell under that new student's spell. Ever since I fell under Susan's spell, our relationship has progressed much more quickly than I would normally be comfortable with.See also: spell

under someone's spell

Fascinated or influenced by someone, as in I think he has our daughter under his spell. This idiom derives from the literal meaning of spell, "a word or formula that has magical power." [Mid-1800s] See also: spell

under someone's spell

so devoted to someone that they seem to have magic power over you.See also: spell