J-Lo and Alex Rodriguez's are Engaged but now someone is saying not so fast

A day after Alex Rodriguez announced his engagement to Jennifer Lopez, former slugger Jose Canseco accused A-Rod of cheating on his now-fiancee.

Canseco tweeted, “Watching World of Dance 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.”

Jose says he was with his ex-wife a few months ago when Rodriguez called her. He tweeted, “Alex Rodriguez stop being a piece of [crap] stop cheating on Jennifer Lopez.”

J. Lo, however isn't taking the bait. A source tells Us Weekly, “She’s heard the cheating rumors in the past and has never let it bother her. She trusts him and his love. They are inseparable and together almost all of the time. Jose Canseco has an ax to grind, but she doesn’t hear the noise.”

Canseco says he's willing to take a polygraph to prove he's telling the truth. He also challenged A-Rod to an MMA fight.

I think Jose is losing it! How about you??

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