My crush gave me a nickname , short and cute version of my last name, does it mean something romantic or just playing around?

I meet her last year, i knew she had a boyfriend but she never told me about him or told me to back off the flirt with her.
She ended up breaking up with him (sources told me, she never talked about him with me).

My crush gave me a nickname , short and cute version of my last name, does it mean something romantic or just playing around?
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