On Friday’s episode, Ms Winter shouted repeatedly at Mr Soares, who she was coupled with, after she saw footage of him admitting he found another islander Clarisse Juliette attractive while in the Love Island villa.
Old footage of the pair flirting was also shown in the Mad Movies challenge.
Ms Winter said she was under the impression Mr Soares was “a f***ing saint” but now believed him to be “a f***ing liar” and a “two-faced p***k”.
“I’ve got a problem with you!” she also shouted at Mr Soares. “I don’t want to speak to you right now, because I don’t want to scream. You look like a two-faced p***k!”
Some viewers suggested Ms Winter overreacted with her rant while others said she was “disrespectful” to her on-screen partner.
She has since apologised to be Mr Soares.
Reports suggested contestants swore 125 times throughout the 60-minute episode and Ms Winter reportedly said “f**k” 57 times.
The episode has so far garnered 24,763 complaints to Ofcom.
An Ofcom spokesperson said: “We’ve received a high volume of complaints about last week’s Love Island, which is consistent with a trend of growing complaints about high-profile TV shows.
“We are carefully assessing the complaints we’ve received, before deciding whether or not to investigate.”
The figure has broken the previous record of Ofcom complaints set last week.
Previously, 4,000 fans wrote to the regulator after Ms Winter was shown a postcard suggesting Mr Soares cheated on her which viewers said was “misleading.”
At the time, a spokesperson for Love Island said: “Welfare and duty of care towards our contributors is always our primary concern, and we take the emotional well-being of all the Islanders extremely seriously.
“We have dedicated welfare producers and psychological support on hand at all times who monitor and regularly speak to all of the Islanders in private and off camera, especially if someone appears to be upset.
“All the Islanders are therefore fully supported by the professionals on-site and by their friends in the villa.”
ITV has been contacted for comment.