My best guess: "Baby (presumably the speaker/texter's girlfriend) wants me not to text anymore." "if do" - I have no idea what this part might mean. "So I promised (Baby?) that I won't text again." I don't understand your heading - what do you mean by "Leftist English?"

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full version is - whoever they are, they don't want to hear from you ever again.. it's not good news..

A text message conversation

Context? Where's it from?