FLAGLER COUNTY, Fla. – A man stabbed a 15-year-old boy because the victim and the suspect’s girlfriend were in a shoving match as they fought about sexual allegations, according to the Flagler County Sheriff’s Office.Deputies said the victim and the 17-year-old girl had been exchanging messages back and forth on Snapchat that included at least one stabbing threat for about a week.[TRENDING: Data scientist Rebekah Jones arrested in Florida | Disney World not selling any new annual passes | Orlando police search for missing 12-year-old girl]The arrest report did not provide details about the sexual allegations.On Sunday around 6:30 p.m., the 15-year-old boy and the 17-year-old girl continued to argue on Snapchat while they were both at James.