A crush is light and largely yours to hold — you notice someone, enjoy it, and get on with your day. Limerence is involuntary and intrusive: it takes the wheel, feeds on uncertainty, and can run for months or years.
Side by side
Aspect
Limerence
A crush
Who's in control
It holds you
You hold it
Intensity
Consuming
Pleasant
Duration
Months to years
Days to weeks
Runs on
Uncertainty
Simple attraction
Daily life
Narrows around one person
Largely untouched
What each one means
Limerence
Limerence is an involuntary state of intense romantic obsession, in which your mind fixes on one person and aches for a sign that they feel the same. It runs on uncertainty rather than intimacy — which is why it can burn hottest with someone you barely know.