Jennifer Lopez responded to former baseball player Jose Canseco’s allegation that fiancé Alex Rodriguez cheated on her.

“It doesn’t matter,” the 49-year-old entertainer told Power 105.1 FM’s Breakfast Club during an interview on Wednesday. “I know what the truth is. I know who he is, he knows who I am.”

She added: “We’re just happy. We’re not gonna let other people come out and tell us what our relationship is. I know what our relationship is.”

Lopez and Rodriguez revealed their engagement on March 9 after two years of dating by sharing a photo of the dazzling ring, which gem experts estimate to be worth between $1 million and $4.5 million.

Read more: Jennifer Lopez and Alex Rodriguez are engaged. Here's a complete timeline of their relationship.

The following day, Canseco said that he was watching "World of Dance" (which Lopez appears on as a judge) and accused Rodriguez of cheating on the singer with Jessica Canseco, who Jose was married to from 1996 to 1999.

In a series of tweets, Jose said that Rodriguez called Jessica a few months ago and he was "willing to take a polygraph to prove that what I'm saying about Alex Rodriguez is 100% accurate."

In response, Jessica tweeted that the "false accusations Jose is making are not true."

"I have known Alex for many years and haven't even seen him for over five," she said. "I certainly did not sleep with him. I am friendly with both him and Jennifer."

Jessica went on to say that the last time she saw Rodriguez, he was with Torrie Wilson, a former WWE star who he started dating in 2011. Their breakup was revealed in early 2015.

Since then, Jose has commented back to defend his story. He also challenged Rodriguez to take a polygraph test.