I asked him to stop using the nickname he gave me. Is that bad?

So we were long distance and we did love each other. We decided it's best to move on and date others. We still talk. He started dating someone. But when he talks to me he still uses the term of endearment we would call each other. I asked him to stop because it's not fair to the woman he's dating.

Was that wrong of me to do? He also hasn't replied to me asking him to stop. Was he hurt by the request?

I asked him to stop using the nickname he gave me. Is that bad?
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