What does "Still Flattering though" means?

She said no to me as she is seeing someone, But said "Still Flattering though"

I know the context is missing, But as English is not my first language, Is this a template response?

l mean like she is just being nice to me?

It felt like that, I just want to know if I took it the right way or not.

What does "Still Flattering though" means?
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