I left my girlfriend two years ago. Got in contact recently?

I broke up with my girlfriend two years ago as I wanted to focus on my studies. She was very emotional then, begging but I explained to her that it is in the best interest for both of us. Now, that I'm about to graduate, I contacted her. We spoke on call for an hour & half, she said on call she misses me, is single and then blocks me in the morning on whatsapp. I called her, she blocked that as well. I begged her on emails and stuff. She unblocked after two weeks on WhatsApp, we spoke and again on call. she had a hot and cold behaviour. The next morning I said something that I can't just be a back up option and you can't have the best of both worlds. She got angry with that message and blocked again saying she does not want to hear from me again. What has happened here?

I left my girlfriend two years ago. Got in contact recently?
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