Answer:
"[PARTNER A] and [PARTNER B], you have come together this day so that the Lord may seal and strengthen your love in the presence of this minister of his word and this community of family and friends and so, in the presence of this gathering, I ask you to state your intentions:
Have you both come here freely and without reservation to give yourselves to each other in marriage? If so, answer by saying 'I have.'"
If you ARE one of the partners, maybe you could say something like:
"If I had a flower for every time I thought of you...I could walk through my garden forever."
or
"Thank you for being with me, through the good and bad stuff. Thank you for being my pillar, when everything was shaking. I promise I will be your pillar for as long as I live.", just something heart warming to your partner.