My ex-FWB cut me off after things got more serious with the guy she was seeing. Is it unreasonable for me to still want to be friends?

I was Friends with Benefits with this woman for two months then she started dating this guy. One day she texted me that things were getting more serious with this new guy and that she was ending things. I thought that we would still be friends, but now she’s unfollowed me on everything and won’t answer my texts and calls. Whenever, I see her she’s cold and distant and things are awkward.
My ex-FWB cut me off after things got more serious with the guy she was seeing. Is it unreasonable for me to still want to be friends?
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