adjective

Strongly infatuated.

he became besotted with his best friend’s sister

infatuated with,smitten with,in love with,love-struck by,head over heels in love with,hopelessly in love with,obsessed with,passionate about,consumed with desire for,devoted to,doting on,greatly enamoured of,very attracted to,very taken with,charmed by,captivated by,enchanted by,enthralled by,bewitched by,beguiled by,under someone’s spell,hypnotized by