Dependent Visa / ARC / Unmarried

Hi, I apologize if this has been posted before or the question has been asked.

I have a boyfriend in Taiwan but he is not a Taiwanese, we are planning to be engaged soon and then married although I’d like to slow down regarding the getting married part, but I was wondering if it’s possible for me to come to Taiwan and live with him as his dependent while we are still unmarried?

Thank You in Advance!

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