Often confused with love, this is the feeling that a particular woman is actually special. This is just an illusion; she is the same as the other three or so billion. "Go fuck ten other women" is the most commonly prescribed treatment for this "disease" (hence the "itis"), as it tends to show quite quickly how very alike people are.

In other words, get over yourself and your obsession with that girl, because it's just an illusion. And when you get rejected, don't be depressed. Because there's really not much to worry about.
Dude, you definitely have oneitis for that girl. You've been talking about her nonstop for the past week. Don't you realize she's nothing special, and that you are just being fooled? Snap out of it so you won't be so depressed when she rejects you!
by Fuss December 01, 2004
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Mickey Black's definition is fucking retarded.

There is only one simple explanation for the term: An unhealthy romantic obsession or fixation for/on one person. This mental disease will often interfere with your ability to attract said person, due to your clingyness.
I'm suffering from oneitis because I have a massive crush on that one girl who works at that one store.
by Sroek July 04, 2010
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An unhealthy romantic obsession with a single person. Usually accompanied by un-reciprocated affection and completely unrealistic idealization of the siad person.
John, snap out of your oneitis man. She's not into you.
by _AtoZ_ March 08, 2010
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The dreaded "One-Itis," otherwise known as the ailment of liking that "One Special Girl" and wanting her more than any other woman on earth. A want so intense, that it's actually painful.
A feeling of intense wanting and need for a particular woman and only this woman - oneitis
by H.M. September 17, 2006
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A social disease that affects millions of people - both male and female - that cockblocks a man or a woman from seducing or romancing a member of the opposite sex. Oneitis, is that social malady that results in a feeling that this person is totally special and unique and therefore one must not mess up anything with them. These confused "messed up" feelings then often mess up the chances of a person seducing their romantic victim brcause after all thier emotionjs tell them that they cannot be too careful, gentle, and that they cannot "act too foolish." OFten, Oneitis also confuses a person by making them worry too much about what other people will think of them or worse what thier romantic victim will think of them, and thus that simply cannot do what is necessary to seduce thier romantic prey.

Normally, a person does not get over oneitis until they are fairly sexually and romantically experienced with several partners - that is because at that point a person may realize they are not that different from each other, the romantic victims, and that each of them was not special and unique, and if one is to seduce their romantic victims and have their romantic victim in thier hands they must not develop oneitis. In other words, oneitis is often overcome with experience and practice - that is what a seducer must accomplish if they are to truly be a master of their craft.

Some helpful advice for getting over oneitis during a seduction is never stop flirting with other members of the opposite sex, never close yourself off, never say that this is the one. Never stop meeting members of the opposite sex and so on.

After a seduction is over and you are now broken up you may develop oneitis thinking that that was the one. You can get over that by meeting new members of the opposite sex, flirting with new membersm, meeting and entertaining them.

THe general advice for getting over oneitis commonly heard is to meet up to ten members of the opposite sex, seduce each one and have sex with each one as soon as you can, one after the other. I do not recommend going that far it does not take that much, it is forwned upon because it is cheating, and because oneitis can affect a male or a female seducer at any point in a seduction.
Like I said, Oneitis can affect a seducer at any point in one of his or her seductions. Thus, I will not belabor the point with numerous examples, but we all now the one were we see the perfect seduction victim, we plan to approach them, we get cold feet, over analyze, and over worry and we never do anything - that is one example of oneitis.

Oneitis has it's origins as a word and a concept in the seduction community, where it was first discovered and analyzed by accomplished and acclaimed seducers.
by Mickey Black May 24, 2006
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the girl who you've had but never will again. no matter how much you try.
it's unhealthy not to get over your oneitis.
by nazar January 09, 2006
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Guy 1: Start the number alphabet at the letter 10
Guy 2: ten oneity-one twelve thirteen-
Guy 1: What.
by Legoboy985 November 21, 2020
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