Why is it always like this?

Girls why you're messed up. When a man take a girl seriously she just leave without caring or thinking, but when a man ignore a girl she won't leave
Personally, i've been with this girl for a year gave her all the care and love, she just left why does this happen, why didn't she kept her promise as i did, sometimes i ask myself should be disrespectful to keep a girl, because when i behave that way girls love it,
Why feelings are meaningless to you
Why is it always like this?
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