Floyd Mayweather announced that he broke up with long-time girlfriend Shantel Jackson, and the reigning pound-for-pound king revealed on Thursday why he decided to end their relationship.

Mayweather posted a photo on his Facebook and Instagram account showing what appears to be an ultrasound result indicating that the couple were expecting twin babies.

The photo, which was later removed by Mayweather was captioned: "The real reason me and Shantel Christine Jackson @missjackson broke up was because she got an abortion, and I'm totally against killing babies. She killed our twin babies."

Mayweather will face Marcos Maidana in a title-unification on Saturday night at the MGM Grand in Las Vegas, and there are growing concerns about how the recent issues will affect the unbeaten champion's performance.

Richard Schaefer, CEO of Golden Boy Promotions, which is co-promoting the Mayweather vs Maidana bout, looked convinced that Mayweather has been losing focus over the past several weeks because of personal issues.

"There's no question about it, he's distracted," Schaefer said via USA Today."Think about it, we saw a very emotional Floyd. Clearly, with a day or two to go until fight night, against without question one of the most dangerous opponents he's fought, his focus should be 100% on the fight."

Schaefer also expressed concern about Mayweather's mental state especially after the 37-year-old champion said that the Maidana bout could be his last when he has been saying all along that he will complete the remaining three fights in his contract.

"With what we've seen, and what we're hearing today, I think there is a lot of other things going through Floyd's head," Schaefer said. "In one moment he says it might be my last fight, the next he's saying he might fight more than the three fights. There's a lot of stuff going through Floyd's head."

Leonard Ellerbe, CEO of Mayweather Promotions, played down speculations about Mayweather's lack of focus, saying that the Grand Rapids native is aware that there is no room for complacency in his upcoming bout against Maidana.

"I don't think Floyd Mayweather gets affected by too many things as it relates to preparation for a fight," Ellerbe said. "Come Saturday night, you will see an even more exciting Floyd.