痴情 carries a romantic-tragic flavor, common in TV dramas and song lyrics. Often paired with 一片 (yīpiàn, 'a stretch / a pure mass of') — 一片痴情 is almost a fixed phrase, suggesting unwavering, slightly hopeless love.
memory
痴 (chī, foolish / obsessed — as in 白痴 idiot, 书痴 bookworm) + 情 (qíng, feeling / love). Literally 'foolish love' — devoted to the point of folly.
