NFL tight end and former pro-bowler Vernon Davis was accused by his long-time fiancée, Janel Horne, of cheating on her with a 20-year-old "child" in an Instagram post.

The accusation, which was first reported by Total Pro Sports, is a definite gut shot to the newly-signed Washington Redskin.

"When you give a man your all, 15 yrs, 3 kids, and you sacrifice your life and then he cheats on you with a 20 yr old child and lies on you," Horne wrote in a post that featured a picture of Davis and the alleged mistress.

Since the photo was posted, Davis has made posts of his own. One might have been a message to Horne her self, in which he wrote, "When people do these things we should hold hands and pray for them."

One commenter asked, "On your way to pick up your 20 year old side chick from day care?" Another was more supportive, saying, "Just keep rolling with the punches, man."

Davis recently signed a one-year deal with the Washington team, and the 32-year-old is no lock to make the final cut. Davis has seen better days on the gridiron, and has apparently the same goes for his personal life as well.