Limerence is the name psychologist Dorothy Tennov gave to a specific state: involuntary, obsessive longing for one particular person, fueled less by who they are than by uncertainty about whether they want you back.
It does not feel like a choice. Thoughts of the person intrude during work, sleep, and ordinary conversation, and a single ambiguous message can reorganize an entire day.
The engine of limerence is intermittent reward. Mixed signals — warmth, then distance — keep the nervous system chasing the next hit of reassurance, which is why unavailable people so often become the most magnetic.
Limerence is not the same as love. Love can tolerate reality and grows steadier with closeness. Limerence thrives on the gap, the obstacle, and the not-knowing, and it often fades or panics when it is actually returned.
Naming it is the first reality check. The feeling is real, but it is information about your own longing and unmet needs — not proof that this particular person is your destiny.