Girls who text guys for an ego boost

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I don't get it what's the point of this? I posted awhile back a question about this girl and how I did not respond on my phone.. so she sends me a message on Facebook.. Long story short I sent her a message back on my phone so I got no response back So I sent her a message asking how she was doing and asked her when she graduates and she went straight to the point and told me it was in March and no I'm doing fine or anything else.

So my question is what's the point of doing that to boost your ego? I never heard of this term until today.. I mean not in the way of referring to texting and all.
Updates
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A little update, on her birthday I sent her a message and no response.. I guess you can't really rely on people who you thought were your real friends :-/
Girls who text guys for an ego boost
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