From conversations during dates, prod for signs of your prospective spouse being too vanilla and straight-laced.
Skip those, and instead go for those who are open minded and adventurous.
Kinky and sexually adventurous need not be mutually exclusive with godly or holy.
What’s kinky vs. vanilla is defined subjectively and culturally. God’s word leaves room for sexual exploration and kink between couples.
So, with absolute purity, aim for the type that’s less vanilla, less straight-laced, more open minded and kinky, at least relative to your society’s standards.