Maybe love at first sight can be described as infatuation. Infatuation has a strong physical element. Also you are infatuated with someone that you do not know well. Often rather than being in love with the person in reality, you are in love with what you want them to be, or what you think they are. Infatuation has a strong impulsive element in it. Infatuation is blind, not seeing the faults of the other person. You want them badly, almost obsessively, but maybe you shouldn't want them.
Is What I'm Feeling Infatuation or Love?  By Self Creation     
 Red Flag Thoughts: 
“You are my life. I can't live without you.” 
There are some feelings we have when infatuated that we don’t have when we’re feeling love. Some of the “symptoms” of infatuation are; feelings of panic, uncertainty, overpowering lust, feverish excitement, impatience, and/or jealously.
When infatuated, we are thrilled, but not happy, wanting to trust, yet suspicious. There are lingering, nagging doubts about our “partner in infatuation” and their love for us. We’re miserable when they’re away, almost like we’re not complete unless we’re with them. It’s a rush and it’s intense. It’s difficult to concentrate. And most infatuation relationships have a high degree of sexual charge around them. Somehow being with them is not complete unless in ends in some type of sexual encounter.
Do any of these “symptoms” resemble feelings of love? Hardly. So why do we become infatuated? Where does it come from? Perhaps it’s biological. 
When infatuated we experience a surge of dopamine that rushes through the brain causing us to feel good. Norepinephrine flows through the brain stimulating production of adrenaline (pounding heart). Phenylethalimine (found in chocolate) creates a feeling of bliss. Irrational romantic sentiments may be caused by oxytocin, a primary sexual arousal hormone that signals orgasm and feelings of emotional attachment. Together these chemicals sometimes override the brain activity that governs logic. 
The body can build up tolerances to these chemicals so it takes more of the substance to get that special feeling of infatuation. People who jump from relationship to relationship may be craving the intoxicating effects of  these substances and may be “infatuation junkies”.
When the chemical flood dries up, the relationship either moves into a loving romantic one or there is disillusionment, and the relationship ends.
Urband Dictionary:
Infatuation almost can equate to lust. It is NOT love nor being in-love, however both usually start off as an infatuation. Infatuation is only an attraction for another person based only on what you initially see and not what you know about them. You do NOT know that person yet. It is only an attraction to someone based on what you WANT them to be verses who they really are. Infatuation turns to true love or being "in love" when you have accepted that person for who they are: their background, their weaknesses, their strengths, their character, their spirit, their values, their spirituality, where they are going in life, etc. 
To prove the difference between infatuation and love is this: infatuation is what leads to the wedding but it is love that begins when the honeymoon is over and you discover the TRUE person you have married after your disagreements.
Infatuation has N OTHING to do with love because you know hardly anything about that person. It's only a form of immiature "puppy love" that occurs in high school. Infatuation does not last, while love does. 
 
   
   
   
   
  