One of the sadder stories to happen during this NFL offseason is how Dallas Cowboys star quarterback Dak Prescott's relationship with his now ex-fiancée, Sarah Jane Ramos , has deteriorated. Prescott and Ramos were supposed to get married last month. Instead, the couple is no longer together and narrowly avoided going to court over custody for their two daughters because they eventually reached a settlement . While this suggests that the couple is at least still able to prioritize their children, the state of their relationship going from soon-to-be-married to separated in just a couple months is disheartening for Cowboys fans. Dallas Cowboys quarterback Dak Prescott (4) | Kevin Jairaj-Imagn Images It initially seemed like things had gone awry during the ex-couple's joint bachelor and bachelorette party in Mexico back in January.…