My present is now and My love is forever

When snake was young, he met a little girl that didn't care about his skin or how many snakes were attracted to him. The girl kiss him and left that day. That was one of the most happiest moments for snake. Years later as a footman of Phantomhive, the same girl enters the Phantomhive manor and knows Snake. Snake does not remember her, but his snake's comrades do.