oneitis is a terrible thing, caring about someone isn't, being obsesive, needy and desperate for someones approval, is a bad thing
it prevents guys from escalating out of fear of losing the girl, it prevents them from being them selves and saying what they want to let their charm and charisma flow out due to being afraid of saying or doing the wrong thing, it makes guys do stupid shit to try to get reactions (overnegging, compliments, routines) that come from a frame of approval seeking or emotional reactivity, it is simply neediness at it's finest, anti-charm, the kiss of death for all those trying to pick up women
overall, neediness is terrible and will only fuck up your ability to be likable, it is just like being super depressed all the time, no one wants to hang out with eeyore from winnie the pooh, just like no one wants to hang out with a seemingly desperate person that wants nothing to do but leech off your pressence like you are a god or something
think back to times in your life where someone thought you were really cool and wanted to hang out with you all the time, except chances are they were not cool themselves just sort of ass kiss and boring to be around, did you admire those people or want to be serious friends with them and hang out all the time?, that was neediness that was turning you off, that guy/girl had ''oneitis'' for you
also, IMO, if you get your oneitis, chances are if it is truely a oneitis, you will lose her, neediness is just simply not attractive to most, unless you have some sort of low self esteem issues and need someone clinging to you dependant on your approval and attention
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