In my story, my main protagonist is an African-American, 19-year-old werewolf girl. She works for an organization that the government developed that deals with capturing renegade Cryptids (another name for vampires, werewolves, witches, faeries, etc.). She is one of the younger members since her werewolf foster father works for them. She has a love interest, but I am not sure how to introduce him. This is not a love story and the love side story does not monopolize her character or the story by any means. Originally, I was going to have him be her partner and work alongside her and be introduced right off the bat. However, someone pointed out to me that it wouldn't make sense because they would have fallen in love beforehand and that I would need a reason for them to not be together already. But I don't know how else to introduce him. Originally, my main character finds a newly changed werewolf girl her age who has no memory of her change, and her investigation to find out who turned her gets her involved in the main plot. Should I change the roles of the girl and love interest so that my protagonist meets him that way instead? Basically, I need some advice on how to properly characterize and introduce a love interest in a story where the relationship is not the focus, but a side story.