Why do girls post so many emotional relationship things on social media?

It seems like every girl out there is posting something about how they are better off alone, or they are heart broken. Or why they are single. Or how they were kind and the guy did this or that. Yet i think the girls i have met have been very distant, un loyal, dishonest, and generally have not been very committed in the relationship i have been in. So why are girls seemingly so emotional to where they are posting all this stuff on social media.
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