Possible Clues:

• Get taken in by
• Be deceived
• Become smitten with
• Be taken in by — become infatuated with
• Be taken in by - romantically?
• Have romantic feelings for - or be taken in by?
• Succumb to charms - take a tumble
• Acquire romantic impulse toward - take a tumble
• Go gaga over
• Succumb to attraction, or be taken in