It depends on the context and development of the story. Sometimes love alone can overcome many challenges, but in other cases, external factors might play a role.
Another possibility is that one of the other characters in PLL has a hidden motive. For instance, someone who is jealous of Allison's popularity or someone who she had an argument with in the past. They might have found a way to make her sick without being suspected at first.
I'm sorry, I don't actually know the specific love story of Arthur Solinap and Rochelle Pangilinan. There could be many aspects to their relationship, such as how they met, what made them fall in love, and how they've maintained their relationship. Without more information, it's hard to say much about it.
I'm not sure who Allison and Twitch specifically are in this context. There could be many people with those names. If they are two ordinary individuals, perhaps they met at a common place like a coffee shop. They might have started as friends, gradually discovered common interests, and then love grew over time through shared experiences and deep conversations.
I'm willing to spend the rest of my life with you. I recommend a modern romance novel, Light of the North Star. The story was about a romantic love story between a poor white-collar worker and a rich family's daughter. Although the male and female protagonists had different backgrounds, sparks of love were ignited because of a chance encounter. The plot was compact and the characters were vivid. It was very fascinating to read. I hope you like this fairy's recommendation. Muah ~😗
Well, 'Shattered Trust' is a popular 'Allison Hurts Stiles' fanfic. It focuses on the emotional turmoil Stiles experiences due to Allison's actions. It has some really intense scenes that make you feel for Stiles. There's also 'Fractured Heart' which is more about the aftermath and Stiles' journey to heal from the hurt Allison has caused.