No, I think you are right. Voldemort would probably not understand anything motivated by love. He only seems to understand fear, power, ambition and things like that. He mocks love several times in the book so I could definitely see him overlooking things done for love. This might even ruin his manipulations - yes, he could manipulate people through fear, but he might be surprised when it backfires on him due to love.

Hope that helps,
~Gina