How is it generally taken by the Jewish community if you (a gentile) date or marry a Jew?

I know a Jewish man who keeps hitting on me. I’m a Christian woman. He knows this. He’s from an orthodox Jewish family, but claims to be non religious. I’ve heard of some of the Jews moving away from their community and intermarrying, but I think it must be pretty rare.

How is it generally taken by the Jewish community if you (a gentile) date or marry a Jew?
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