Ex slowly starting back talking to me?

My ex and i work together. We broke up but we rarely talk. The break up was more his idea. This week he has been talking a little more to me but not much. A few days ago we walked past each other and he said “have a great evening Miss “ and i told him to have a great evening as well.

He texted me today and said “i see you leave on lunch break you didn’t offer me any” and then texted me a few hours later and asked about my glasses

This morning he said hey to me while walking past


He is the one who broke it off
Ex slowly starting back talking to me?
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