If God is saying No, then that is what you need to know. You want your ministry to flourish but you are refusing to do what God is suggesting you to do? How can He entrust you with big things if you do not do the smaller things? Getting married is a small thing. Staying married and growing the marriage, while growing a ministry is a big thing. God loves you very very much and does not want to see harm come to you or her. It may not be the right time yet. It may be that He wants to see if you are willing to do what He says, even though it hurts, now. I would rather have Jesus than anything.
In the name of Jesus, I bless you and her and your ministry with the life of God.