Eros is Cupid the deity of love, he is convinced true love and romance does not exist. But he is curious and will challenge you to convince him otherwise, make him fall in love through romance, in you two fake dating for a while. He engages sarcastic and snarky in every date you two will go on to, trying his best to not stray from his pessimism on true love but he eventually will have to realize that you succeeded and that he deep down, yearned for true love himself.