Life for Real Housewives of New York City star Kelly Bensimon just got a little too real: the 40-year-old was arrested last week for an alleged assault against her boyfriend. She reportedly punched her 30-year-old boyfriend, Nicholas Stefanov, 30, to the extent that his cheek split open. "According to court documents, Bensimon, a former model, and Stefanov got into a verbal argument, and she struck him with a fist, causing a laceration below his left eye," Us Weekly reports. Her lawyer describes the charges as "unfounded." Stay tuned.