Jose Canseco claimed on Sunday that his ex-wife Jessica has been sleeping with Alex Rodriguez for years.
The 54-year-old former athlete made the shocking accusation the day after Rodriguez, 43, proposed to girlfriend Jennifer Lopez, 49, in the Bahamas.
And on Tuesday Jessica finally broke her silence when taking to social media.
Not her: Jessica Canseco, seen in 2016, broke her silence about her ex Jose's claims she was sleeping with Alex Rodriguez
Past: Jessica, seen here with Jose and their daughter in 2004, has said she is not having a romance with Alex
'Those false accusations Jose is making are not true!' the Playboy covert girl, 46, said.
On the cover of Playboy in 2005
'I have known Alex for many years and haven’t even seen him for over 5. I certainly did not sleep with him.
'I am friendly with both him and Jennifer. As for Jose he can keep playing with his Alien friends.'
Jose has said he has met with aliens.
In a second tweet, the Hollywood Exes alum added, 'In fact I don’t even get on twitter had to download app again and don’t watch tv and had no idea any of this was going on.
'Last time I saw Alex he was with Torrie [Wilson] and I brought my boyfriend over for dinner. We are just friends my god.'
Jose raised eyebrows on Sunday after he claimed that Rodriguez cheated on Lopez with his ex-wife Jessica (maiden name Sekely), who divorced Canseco in 1999.
He did it: Here Alex is seen getting down on one knee as he asks for her hand in marriage
The kiss that says yes: Lopez planted a smooch on her man after she said yes
That is some bling: Alex gave Jennifer a very large diamond when he proposed
Canseco began tweeting about the alleged affair while 'watching World of Dance', an NBC reality show in which Lopez is a judge.
Leila Knight, Canseco's former fiancée of nine years, told DailyMail.com exclusively that her ex's allegations 'are highly unlikely to be true, and even if it was true, he wouldn't know about it.'
DailyMail.com has reached out to Lopez and Rodriguez's representatives, as well as Jessica Canseco, for comment.
Canseco began tweeting about the alleged affair while 'watching World of Dance', an NBC reality show in which Lopez is a judge
Canseco tweeted the cheating allegations on Sunday, writing, 'Watching J.Lo text Alex Rodriguez, little does she know that he is cheating on her with my ex-wife Jessica.
'Poor girl, she has no idea who he really is.'
Canseco then said he was 'there a few months back with her when he called her on her phone', seemingly referring to Rodriguez and Jessica.
'Alex Rodriguez stop being a piece of s**t stop cheating on Jennifer Lopez,' he added, before challenging him to a 'boxing match or an MMA match anytime you want'.
Canseco's long-time ex Knight was skeptical about the claims, telling DailyMail.com that Canseco's Twitter shows a lack of credibility, in general.