Does she like me or is just polite?

We were something for 3 years. She used to love me but I lied her that I had a girlfriend and my girlfriend wouldn't like if she text, just to let her go after all these time. And she left.

She kept her distance. We meet at office and she acts like I don't exist and walk past. I never saw her even glancing at me.

So last month I texted her. She replied a month back. I asked her if she is single several times and that I am single now. She now takes her sweet time to reply. Maybe 2 days or so.

Is she being polite or hurt coz I left her?

Does she like me or is just polite?
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