The once you enter your first limerence, you know and you start looking other people who dont as child[me].

It is a psychological term for romantic crush. When a person have love infatuation to another and start idealising that person whom you desesperatly want attention. A kind of love addiction that enter the spectra of affection disorder.

It begin when you cant just think of something else than her. You think she is the only one. And she is everthing for you. You have intrusive though about her out of context, like in your video game, dinner, maybe you just dont stop thinking about her. It can happen for a crush you are just to shy introduce yourself and start daydreaming a relation. Or it can happen after a breakup, that ex. Rock stars. Fictional character.

It hurt a lot living it, but the pain is enjoyable. It feel extatic while giving you nausea often. You feel that empty stomac. Beleave me its not love, it a spell induced illusionary love, like one form the dark side of love can appear. If it feel like anxiety, its not love. How you think the "yes maam" still stick to the evil abusive sorceres. Limerence.

First you need to stop thinking about her and for this you need exciting change. Change clothe, change schedule, find yourself a project you CANT wuse out and make it big, change a lot of thing and dont think about her.
After you will be able to renew with your hobbies and then you know.
Until you see her and can have a nice rest of day, this is convalescence. 

remember once addicted, forever addicted, just never let it go.