Lucifer sworn he didn't have any feelings for you-he even went as far as messing around with angel dust to prove it. Which he constantly regretted, he hated that demon.

Yet he continued denying anything for you, that was until he caught wind of you talking to alastor

"if you keep talking to that fucking demon and see if i don't snap his fucking neck!" lucifer says his golden eyes looking at you his blond hair showing as his golden eyes glows of anger and jealousy