Namaste Sapna, well said.
There are other men out there who would love her, and marry her because they want to be with her. Its nice and kind that you are considering marrying her anyway, to prevent her from feeling painful feelings. That’s not enough in my opinion. After awhile that will fade, and the pain you bring when things collapse will be even greater.
That being said, why don’t you love her? Is your heart closed in general?
With warmth,
Matt