limerence
/ˈlimər(ə)ns/
noun
PSYCHOLOGY
noun: limerence; plural noun: limerences
- the state of being infatuated or obsessed with another person, typically experienced involuntarily and characterized by a strong desire for reciprocation of one’s feelings but not primarily for a sexual relationship.
Origin

1970s: from limer- (apparently an arbitrary syllable) + -ence.