Break Up & Divorce

How do I respond to "Do you hate me?" as a text message from my ex?

I was in a relationship with my ex for about 5 years. She had a problem with not telling me the truth and even though they were red flags I was not too worried about it. My gut instinct later helped me find out that she was lying about a secret guy friend. I confronted and told her if he was a normal friend then she would have not had to keep him secret. I was still going to forgive her if she let him go but I could feel her hanging on to him so hard. She ended up doing the "I need a break" on me and ended up leaving me for that same guy. She was never upfront and honest about her reason for leaving me and though she never gave me closure I still wished her happiness in life.

It has been about 45 days since then and I just went 100% no contact to focus on myself and my own happiness. Last night out of nowhere I get a text and it says "Do you hate me?". I was surprised when I saw it was from my ex. Why would she even ask me this? Should I respond? I feel like I'm being an asshole by not responding but I feel like she is trying to bait any feelings that I still might have. Maybe someone out there has been through something similar. Thanks for taking the time to read my question.
How do I respond to "Do you hate me?" as a text message from my ex?
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