FFTOLA,

I would let go of that girl.  Keep her blocked and don’t check if your social media is being checked or not.  Move on.

I’m not sure what you mean by “too late.”  It sounds like she never was that into you from how you described her behavior.

Keep focusing on making your own life happier, not only through meeting other girls but just in general with hobbies, books, friends (male and female).

What you said was telling, “I  just doesn’t feel complete.”  It is up to us to feel complete for ourselves.  We cannot depend on others to do that for us.  That is co-dependence.

Mark