Two-timing Kevin Gaylor, 24, dialed 911 in a desperate bid to convince his missus that the "other woman" he'd picked up on Craigslist was a burglar and not his date.
He told cops that "she was wielding a gun."
Cops said he had arranged to meet his "date" at his Colorado Springs home at around 3am on Wednesday morning.
But his plan met a hitch when his girlfriend unexpectedly arrived home, cops told The Gazette.
In a bid to desperate bid to prove his "innocence" he called the cops and reported that a person was trying to break down the door, adding that she had a gun.
Five officers sped to his home and immediately arrested the supposed burglar, but pretty soon they let her go.
Police spokesperson Barbara Miller said: “When they started listening to the story, they said there’s more to the story than meets the eye.”
Officers served Gaylor a summons for false reporting to authorities, a misdemeanor.