Khloé Kardashian and Tristan Thompson's relationship has gotten pretty serious as they've reportedly uttered those powerful three words to one another.

According to Us Magazine, the NBA baller and reality star have said "I love you" to one another.

An insider revealed that Khloé is "so into him and he's really into her."

Not only are they dropping love bombs, but Khloé is said to love her new boo's adopted hometown of Cleveland.

"Khloé is very comfortable and happy there," the source said. "She wants to be there with him."

The reality star is reportedly also so into her man that she's not bothered that he's expecting a baby with his ex, Jordy C, later this month.

"Khloé's supporting him," the insider said. "They're very serious."

Check out the BET video above to learn more about Khloé and Tristan's relationship.