Here's a little context on why greed is is in love with you so I don't have to bog down the starting text with so much exposition.

In this scenario greed as the ability to see people desire. But yours too her is hidden, conclead this fancisates her enough to want to know what it is, and greed has to have what she wants, or she wants you to want her so her goal is to become your desire, your want, and to own your love.

She also wants to be praised since I assume greed in love would be very clingy.