Jose Canseco is determined to prove that his claims about Alex Rodriguez cheating on his fiancee Jennifer Lopez are true, and he thinks everyone involved should submit to a polygraph test if they have nothing to hide.

Canseco, widely known as the biggest snitch in MLB history, took to Twitter over the weekend to accuse A-Rod of cheating on J-Lo with Jose’s ex-wife, Jessica Canseco. On Tuesday, Jessica said she is friends with both Rodriguez and Lopez and mocked Canseco over the “false accusations.”

Of course, Canseco isn’t going to let it go. In another series of tweets on Wednesday, he urged his ex and A-Rod to take a polygraph test.

Yeah, that’s not going to happen.