I think if you look up the defintion of limerance and compare it with the defintions of "love" from literature, songs, poetry - it is basically just being madly in love. Which of course is not the same thing as the verb "to love" or cathect or invest or commit long term but is love as an emotion.
I read this once which explains it very well!!!
Love is made up of three elements:
Intimacy – feelings of attachment, closeness, connectedness.
Passion – compulsive thoughts and sexual attraction.
Commitment – the intention to remain in contact and close with another.
Using these 3 elements in various mixes describes 7 different kinds of love, starting with Non-love which is the absence of all three elements of love above.
Non-love describes the majority of relationships, like we have at work which are simply casual.
Liking and friendship: Intimacy only.
It is a set of feelings one experiences in relationships that can truly be characterized as friendship. One feels closeness, bondedness, and warmth toward the other, without intense passion or long-term commitment.
Infatuated love: Passion only
Once is infatuated because of the the experiencing of passionate arousal in the absence of intimacy and decision/commitment... Some romantic relationships start out as infatuated love and become romantic love as intimacy develops over time. Without developing intimacy or commitment, infatuated love may crash and burn suddenly.
Empty love: Commitment only.
Infatuated or fatuous love may evolve into empty love. However, in arranged marriages, the parties relationship may begin as empty love and morph into another form, indicating "how empty love can take an ember and turn it into a flame sometimes, rather than a flame that turns into an ember as in many western marriages..
Romantic love: Intimacy and passion.
Like in all the good romance books, but without sustaining commitment.
Companionate love: Intimacy and commitment
A non-passionate type of love that is stronger than friendship because of the element of long-term commitment.Most long-term marriages are like this..
Fatuous love: Passion and commitment
Like a whirlwind romance and marriage. Commitment is made on the basis of passion without the influence of an intimate and close involvement.
Consummate love: Intimacy, commitment and passion.
This is the complete and idealised and perfect form of love, but it can fade to companionate love after a few years and passion fades.
So based on this really...I think that "love at first sight" can't eat, sleep, breathe is all part of "love" (not limerance) but in some cases it is missing the other two elements which may or may not develop over time.
I have loved men with intimacy and commitment but without the passion and it is nice, comfortable...but oh boy....when you have all three!!!