My ex keeps texting me why?

My ex girlfriend keeps texting me I told her we couldn't be friends already. (We can't be friends because bad things happen between us even if we're dating other people). Anyways she texted me last night and told me she couldn't sleep. I asked her why she said she wanted to talk to me.
why does she keep texting me after I said we can't be friends?
My ex keeps texting me why?
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