Kamran Rashid (40) is awaiting sentence for sexually assaulting a woman at a house in Blackburn.
In November 2021, Rashid (pictured) got into the same bed as her while she was asleep and when she woke, engaged in sexual activity without her consent.
She was so traumatised that she ran from the scene.
Rashid, formerly of Cheetham Street, Blackburn, and now of no fixed address, was arrested later the same day and charged with rape.
He pleaded guilty to sexual assault by penetration when he appeared in the dock at Preston Crown Court, last Monday.
Rashid, who has previous convictions for sexual offences and is a Registered Sex Offender, was remanded into custody to be sentenced on June 3.
DC Sarah Fyans said: “Rashid is a dangerous pervert who committed this heinous offence on a really vulnerable young woman.
“Rashid knew exactly what he had done but made the victim wait until the day before she was due to give evidence in court before entering his guilty plea.
“The victim in this case has shown incredible strength and resilience throughout the judicial process. I want to place on record my admiration for the bravery she has shown.
“I hope the outcome of this case will encourage other victims to come forward, knowing they will be believed and listened to. And that we will do everything in our power to put the offenders before the courts.”
Anyone who has been a victim of a sexual offence, can report it online here: https://doitonline.lancashire.police.uk/