drool over (someone)

Translations
слюнки текут от (кого-то)
He couldn't help but drool over the celebrity he met at the event.
Он не мог не пускать слюни на знаменитость, с которой встретился на мероприятии.
Definitions
To look at someone with intense admiration or desire, often in a way that shows strong attraction or infatuation, sometimes to the point of being obvious or excessive.