One way to make their relationship development unique is by introducing a supernatural element. Maybe Lucy has a special power that only Ian seems to understand or be able to help her control. This shared secret and the need to protect each other because of it could lead to a very different and deep relationship compared to what we see in the normal Pretty Little Liars storyline.
He could start working with the Liars to expose all the secrets in Rosewood that he was once a part of. By actively trying to right his wrongs and bring the truth to light, the other characters could start to see him in a new light and forgive him. He could also show remorse for his past actions by helping the victims of the A - game that he was involved with.
They could start by sharing their fears about the 'A' situation. Hanna could open up to Mike about how she's always been targeted, and Mike could share his concerns about his sister. This mutual sharing would bring them closer.
One interesting plot idea could be that Lucy's character discovers a long - hidden secret about Ian's family that ties into the main mystery of Pretty Little Liars. For example, it might be related to a past event in Rosewood that was covered up.
A unique way to develop their relationship could be through a time - travel element. Imagine if they somehow got transported back to a key moment in Rosewood's history. They have to rely on each other to find their way back to the present while also learning more about each other's true selves. This would add an element of mystery and adventure to their relationship and make it stand out from the normal relationship development in the Pretty Little Liars story.
Their characters could start off as enemies. For example, Troian's character could be a straight - A student who thinks Keegan's character, who is more of a laid - back rebel, is a bad influence. But as they are forced to work on a project together, they start to see the good in each other and gradually fall in love.
To develop Ashley Marin's character in fanfiction, one could explore her friendships more. Maybe she has a long - lost friend from her youth who resurfaces, causing her to reevaluate her life in Rosewood. This would show a different side of her, perhaps a more carefree and nostalgic side.
A way to develop their friendship further is by having them face a common enemy. It could be someone from their past who resurfaces and tries to cause trouble for both of them. By standing together and fighting this person, they would grow closer. They would have to rely on each other's strengths and cover each other's weaknesses. This shared experience would deepen their bond.
Their friendship can be developed further by having them share more personal secrets. For example, Hanna could tell Alison about her insecurities regarding her family's financial situation even after things got better. Alison, in turn, could open up about her fears of losing her friends again. They could also have more adventures together, like exploring an old abandoned house in Rosewood and relying on each other during the spooky moments.
Another way their relationship develops is through self - growth. Emily might grow more confident in her feelings for Alison, and Alison might become more empathetic towards Emily. They both learn from their past mistakes and build a relationship that is based on mutual understanding, respect, and love. For example, Alison might learn to be more honest about her feelings after seeing how much it hurt Emily when she was secretive in the past.
One plot idea could be Ian Thomas faking his death and secretly coming back to help the Liars solve a new mystery that is related to his past. Maybe he has some secret knowledge that can protect them from a new threat in Rosewood.