Another one bites the dust! After just two months of dating, former Miss USA Olivia Culpo has reportedly called it quits with her NFL boyfriend Tim Tebow because the of the football star has dedicated himself to abstinence until marriage. "He was really into her," a source close to the Culpo tells the New York Daily News' Confidenti@l. "He was sending her love letters and cute notes and professing his love for her." However, it looks like the sweet notes were not enough. (Photo Credit: Getty Images) Culpo reportedly told close friends that Tebow's refusal to have sex directly led to the breakup.