News of Sophie and Tom's break up surfaced last week, and fans soon saw the ex-couple hit out at each other on social media in a public Twitter spat.
Cheating allegations were thrown, but Sophie has denied she cheated on Tom and claimed he was never unfaithful to her either.
During a Q&A on Snapchat, Sophie found herself inundated with questions about herself and Tom.
When one fan asked what the situation was between the pair, she replied: "It's complicated."
In response to questions asking whether Tom had cheated on her, Sophie replied: "[Tom] hasn't cheated on me, he was just a little bit thoughtless."
Her comments come after Sophie accused Tom of asking another girl for their number when they were together. She shared a screenshot of the messages thought to be sent from Tom, with one reading: "Hey Soph find out I got your number and kicked off. She's prob gonna message you, please just don't reply to her or this message please."
Tom, meanwhile, accused Sophie of cheating on him with another man after she had quit the Love Island villa to work on her relationship with Tom. He tweeted: "2 can play at that game.. here's a picture of Sophie cheating on my the week she got out of the villa... (sic)."
He shared a photo of Sophie sitting with another guy who appeared to be leaning in to kiss her. Sophie, meanwhile, denied she had been unfaithful and hit back that the guy in question was her friend. She tweeted him in response to Tom's photo of the pair and said: "Hahahaha look what you started gofffffyyy. I cheated with you don't forget... #whenapictureisallyoucanuse."
Reveal has contacted reps for both Sophie and Tom.
Sophie was first to allude to her break up with Tom, after sharing a cryptic quote on Instagram linked to their romance. It read: "Some people are meant to fall in love with each other, but not meant to be together." Sophie added the caption: "Fall in love, learn, then let go. The chapter may be over but the story isn't," but has since deleted her post.
Tom also shared a quote. His read: "Sometimes I regret being nice, apologising when I didn't do anything wrong, and for making unworthy people a priority in my life."
He also tweeted: "I haven't got a short temper...just a quick reaction to people's bullsh*t," adding an emoji of a middle finger.
Fans saw Sophie and Tom get together on the second series of Love Island this summer. Their relationship had been on/off on the show, but the pair went on to date for several months after filming wrapped.
They are the first official couple to split from the series.
Those still together include Olivia Buckland and Alex Bowen, Scott Thomas and Kady McDermott, Nathan Massey and Cara de la Hoyde, Terry Walsh and Emma-Jane Woodhams and Rykard Jenkins and Rachel Fenton.
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