A woman died in her hotel room on New Year's Eve after taking a cocktail of drugs supplied by the man she had just got engaged to.
Hollie Sheridan-Connis had drunk "copious amounts of alcohol" with her boyfriend Ryan Lee Weston when the pair agreed to give their "volatile relationship" another go, a court heard.
The couple had recently reconciled after Weston, 32, had bought a number of rats in a pet shop and released them into his partner's home.
In the early hours of New Year's Day 2019, paramedics were called to a hotel in Bala, North Wales, where they found Ms Sheridan-Connis unresponsive.
Weston admitted to supplying his girlfriend with a lethal cocktail of cocaine, ecstasy, amphetamine and ketamine, which she later died from, North Wales Live reports.
The couple from Birkenhead, Merseyside, who had been together for around five years, had brought the drugs and alcohol to the hotel with them.
Judge Huw Rees told Caernarfon Crown Court that they had been "reckless" and were both "willing participants" in the drug taking.
Ms Sheridan-Connis' family were unaware that the couple were back together at the time of her death, the court heard.
Matthew Curtis, prosecuting, told the court that just a few weeks earlier, Weston had filmed himself buying a number of rats at a pet shop and then took them to his partner's home and released them in her bedroom.
Mr Curtis also said Weston had previously broken Ms Sheridan-Connis' jaw in an aggressive attack.
Before New Year's, the couple had reconciled and decided to spend the night at a luxury hotel.
During the evening, the pair got engaged and started to drink heavily before the hotel manager had to ask them to keep the noise down, the court heard.
Weston returned from another room to the bedroom at around 5am when he found his partner had stopped breathing.
He sounded the fire alarm to get assistance and paramedics attended the scene, but were unable to save her.
Mr Curtis said: "The police were called and Weston was arrested on suspicion of murder. In interview he admitted taking drugs to the property."
Weston admitted supplying the drugs and also pleaded guilty to burgling Ms Sheridan-Connis' home in Leasowe earlier in December 2018.
Handing Weston a 21 month jail term, Judge Rees said: "This is a tragic case and underlines the devastating effects drugs and a combination of alcohol can have.
"Courts often warn death can result and in this case it has."
Weston was already serving a 45-month jail term having pleaded guilty to possessing drugs with intent to supply at Chester Crown Court last August.
Michael Gray, defending, said Weston had shown remorse and was determined to lead a more productive life on release from prison.
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