Arcison

Arcison​ (formerly known as Ellison) is the former romantic turned antagonistic pairing between Archer Dunhill/Elliot Rollins and Alison DiLaurentis. The pair first met after Charlotte was admitted to Welby State Psychiatric Hospital, while Archer was under the alias of Elliot Rollins. The pair started a friendship that later turned romantic. Unbeknownst to Alison at the time, Elliot was really Archer Dunhill, who was in a romantic relationship with her sister Charlotte, and was only using Alison to help Charlotte get out of Welby.

Series
We've All Got Baggage
 * -|Season 6=

Alison is in the kitchen grading essay's while Elliot is across the room, when she receives a text from her stalker asking if, "the good doctor know why Charlotte ran out of your house that night? I do." causing her to look at Elliot who doesn't notice. Alison and Elliot are sitting outside her house on the front steps. Noticing that she seems upset, he asks her what's wrong. She replies that she and Charlotte stayed up late and talked the night that Charlotte came home. She told Charlotte about their relationship, but Charlotte had just stared at her and walked upstairs as she felt betrayed. Elliot says that it was probably more by him than her, due to the fact that he was Charlotte's doctor. However, Ali revealed that she felt as if Charlotte was mad at her and that's why she ran out of the house that night, and that she feels as if she delivered her sister to her murderer. Elliot grabs her hand and assures her that the person who failed Charlotte in that moment was him, not her, as she had done everything she could have for Charlotte. Alison receives a text from the stalker, and looks at it before sending a text back asking if the person is Sara Harvey. A figure blocks the sunlight and startles Ali, who turns to see Elliot, who asks if that message was for him. He asks how long she's going to avoid him, and while she she tries to deny the fact that she's avoiding him, he says that he doesn't want to be pushed away because she feels unnecessary guilt. She replies that she's feeling a lot of things, causing him to ask if she can look at him and not see Charlotte. He takes her hand and tells her that he's there, and that he's alive, before adding that he loves her and wants to spend the rest of his life with her. A shocked Alison asks what he's saying and he says that it's exactly what she thinks and the two share a smile. Later that night, the couple knocks on Aria Montgomery's door and asks her if she will marry them. Aria originally declines, stating that she can't, but Alison asks why she can't since she is officiated. She goes on to say that the twinkle lights are still outside, and Elliot states that he has the rings.

Burn This

Hanna and Aria are talking in the Montgomery house about Elliot and Alison's new marriage. Hanna says that she barely even knows his name and now he's married to Ali, which Aria responds by saying that, even though he's a stranger to them, he and Alison have known each other for years. Hanna states that they had only just started dating, and asks if it was their second date. Aria states that seeing Alison and Elliot together was actually romantic. Emily walks in and sharply says that romance has nothing to do with it, as Alison had lost everyone she cares about, so now she's desperate for a family. However, Hanna believes that Alison is just smart, since they eloped, no one can throw them a bridal shower or a make a fuss over them being together.
 * -|Season 7=

Dating Timeline
Friendship/Flirtation:
 * Started: Prior to Of Late I Think Of Rosewood (approximately a year after Charlotte was admitted to Welby)
 * Reason: Charlotte needed Archer to get close too Alison so he could convince her she was doing well enough to be released.

First Relationship:
 * Started: They developed romantic feelings towards one another and kissed. (Prior to Of Late I Think Of Rosewood)

Engagement and Marriage:
 * Started: We've All Got Baggage
 * Reason: "Elliot" admitted that he loved her and wanted to spend the rest of her life with her. Alison and "Elliot" were than formerly married by Aria Montgomery.
 * Ended: Alison learned that Elliot Rollins was really Archer Dunhill, and her marriage to him was fraudulent due to her marrying an alias and a fraud.

Threats to Arcison
Past:
 * Mary Drake: As one of the few people who knew of Archer's real identity, she was one of the few people that could have exposed Archer and ended his relationship with Alison. However, she stayed silent due to her fear of Archer and desire to seek revenge against those who wronged her and her daughter.
 * Jenna Marshall: Like Mary, she was one of the few people who knew of Archer's true identity and could have exposed him and ended their relationship. However, she stayed silent as she was a friend of Archer's and was aware of his grand plan.