After several years in the league, when a player becomes a vested veteran in the NFL, they play under a different set of rules. For instance, if you cut a vested veteran mid-season and they don't get picked up by another team, you owe them the remainder of their salary.
This life is what you make it. No matter what, you're going to mess up sometimes, it's a universal truth. But the good part is you get to decide how you're going to mess it up. Girls will be your friends - they'll act like it anyway. But just remember, some come, some go. The ones that stay with you through everything - they're your true best friends. Don't let go of them.