[@Keksalot]I went looking at Lust in the old game to see how the other player played her and he made her desire things expensive, powerful, and pleasant in excess and afterwards, discarded them because those things were no longer special. Very similar to Greed except I believe Greed is more of a hoarder about it, and shares nothing. 

I don't want to tell you how you should play your interpretation of Lust. It is your character. I just read CSes and if I feel the concept doesn't fit, then I try to work with you before I out-right reject it. Your current CS can work but you seem to have a difficult time explaining how its theme is lust. Maybe try for a different sin that is easier for the muse or a Holy Knight.