Khloé Kardashian may seem cool and collected on the outside … but, even she’s lost it a time or two in her life — admitting she went totally “ballistic” when she found out her ex-husband Lamar Odom was cheating on her when they were married.

The reality television star opened up about the ex-NBA player’s unfaithfulness in an interview on “Call Her Daddy” released Wednesday … specifically detailing when she tracked Lamar and some woman he was with to a motel in Downtown Los Angeles.

Kardashian — who was married to Odom from 2009 to 2016 — says she looked through the window when she got there and “saw in the window that him and this girl were … they were either naked or she was in lingerie, something like that.”

KK remembers going to Kourtney Kardashian‘s daughter’s birthday party the next day … with bloody knuckles wrapped up in bandanas acting like “nothing ever happened. And I don’t think I ever said a thing.” She doesn’t say where the blood came from.

Strangely, it seems one of Khloé’s other family members might have known about Lamar’s cheating anyway … admitting Kim Kardashian may have known about both Lamar and Tristan Thompson cheating on her before she did.

Worth noting … Lamar has also opened up about his exact incident — calling Khloé walking in on him and some girl doing cocaine in a motel “one of the darkest places,” and “rock bottom.”

Kardashian admits she’s in a much better place in her life now … not feeling the need to tail a partner around L.A. if she was in a relationship.