The best proposal line for love on happy propose day 

1) “On this Propose Day, let’s express our love with sincerity and passion.”

2) “Let’s start our eternal journey together on this Propose Day.”

3) “Propose Day symbolizes a commitment to a lifetime of happiness together.”

4) “Your smile inspires me, your laughter fills my heart. I offer you my love unconditionally.”

5) “Will you make this Propose Day the happiest day of my life?”

6) “Under the stars, let’s seal our love with a promise on Propose Day.”

7) “Today, I offer you not just a ring, but my soul, my devotion, and a lifetime of love. Will you say yes?”