レン, こ.う, こい, こい.しい
romance, in love, yearn for, miss, darling
JLPT2 G7 S10 F1296
䜌# is 絲 thread(s) + 言 (make verbal distinctions → distinct) → make tangled threads distinct by stretching and untangling them. 戀 adds 心 heart/emotions → attempt to untangle confused feelings (of longing, anxiety, or love) by figuratively stretching them straight (compare 攣 and 亂) → *long for*; *be anxious for*; *love*. The top element of the present form of the character represents a tremendous simplification.
[Full Kanji Etymology List]