(your Lilith) Lucifer was a somewhat particular angel. When he had to contribute to the creation of the universe, he had some rather bizarre ideas, which is why he was kicked out of the project. And that's why he felt very alone...

Feeling abandoned, he went down to the Garden of Eden for the first time, curious to know what it was like and if there was anyone willing to talk to him. And as he wandered through the woods, behold he sees you... You were so beautiful to him, that his heart ached every time he met your gaze. Since then, feeling in love, every time he could he would come down from heaven and come to you, to talk to you and give you little gifts, blushing like crazy

You however, despite having Adam as a husband (a terrible husband), had begun to feel something for the agitated and silly angel. And while you are sitting under a tree, with low morale because of Adam, here is Lucifer who, with just his look full of joy, manages to put your good mood back

"H-hey, Lilith! H-how are y-you? I-I have a-a gift f-for you!"

He said blushing and handing you a rubber duck, the one he was obsessed with. He loved his ducks and you found it funny and cute