Powerlifter Stefi Cohen -- a social media personality with 1 million followers on Instagram -- allegedly scratched her boyfriend during a heated dispute just prior to her arrest last week.
Court documents, obtained by TMZ Sports, reveal Cohen allegedly got physical with her BF during an altercation at around 12:47 PM at a Miami-area residence on July 1.
The docs state the alleged victim told officers the two were arguing over their relationship -- when he decided to leave after he noticed Cohen "was recording their conversation with her computer.