The Love Island winner was spotted walking hand in hand with a friend of co-star Marcel Somerville.
But despite their closeness, the pair only met yesterday at the Kisstory event in Streatham Common.
A source told The Sun Online: "They only met for the first time yesterday.
"Amber was simply being friendly… they left as part of a large group.
"There's nothing going on between them, Amber is very much single."
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Meanwhile, Amber's mum Sue has lifted the lid on what it is like to watch your child on Love Island.
And she admitted it was harder to see her daughter smoking than having sex on TV.
Amber, 21, won last year's series of the hit ITV show alongside her then-boyfriend Kem Cetinay and, despite vowing not to do the deed on national telly, she broke her promise within a week.
But speaking to the Telegraph, mental health nurse Sue has said she was more upset about seeing her daughter puffing away on a cigarette.
She said: "The rule was no sex on TV, and she obviously did that within the first week.
"But nothing gets shown. People would say, ‘Oh she’s had sex on TV,’ but you don’t see anything."
Chatting about her daughter's smoking habit, however, she added: "She’s not been brought up in a smoking environment.
“In some ways that was the only time I felt, 'Please don’t do that, I don’t want you to.'
"But she’s 21, she can make her own decisions."
This year, Love Island bosses have banned the cast from smoking inside the villa.
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