have (someone) under (one's) spell(redirected from having him under their spell)
have (someone) under (one's) spell
To be extremely fascinating, enchanting, or seductive to someone, causing them to be under one's control or influence as a result. Our son has never acted out like this before. I think that new friend of his must have him under his spell. I would normally never rush into a relationship this quickly, but Susan has me completely under her spell. The duchess has had countless men under the spell of her incredible beauty and charm.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.