moonstruck

adjective3

1. •
   (figurative) Showing irrational behaviour, especially of a romantic or sentimental nature; in an entranced or distracted state, especially due to being in love.

   • The full moon was spacious now behind the maples. The seedy Pickerbaugh domain was enchanted; […] and over all the world was the proper witchery of moonstruck love. — 1925
2. •
   Made physically sick, or (like fish) unsuitable for food, by the supposed effect of moonlight.
3. •
   (no longer used) Of a person: perverted or insane, originally supposedly due to the influence of the Moon; compare lunatic.

   • 'Tvvas vvhen the Dog-star's unpropitious ray / Smote ev'ry brain, and vvither'd ev'ry Bay; / Sick vvas the Sun, the Ovvl forsook his bovv'r, / The moon-struck Prophet felt the madding hour: […] — 1742