The heartbroken boyfriend of a teenager who died in a house fire has paid tribute to her online.

Natalie Merry, 18, was pronounced dead at the scene of a blaze on York Street, Ayr, on Sunday evening.

A man, 22, and a woman, 49, were taken to hospital after emergency services were called out to reports of a fire at the property.

Friends of the teenager have been left devastated at the news of her sudden death.

Alistair Innes posted a heartfelt message to his girlfriend of two-years on social media.

He said: "I'm absolutely heartbroken, had the happiest and best 2 years of my life, she made me so happy, gonna miss waking up to her beautiful wee face everyday. Love you so much Natalie."

Grieving friends were quick to offer their support to Alistair and share their own words of condolence.

Michaela Semple posted: “Natalie’s playlist is on in the car. All the girls are meeting to be together tonight. You are with us in spirit gorgeous, you will be missed so much. We love you so much and you will be remembered forever.”

Danielle Anderson added: "So sorry for your loss. Heart is breaking for you and her family, Natalie was an amazing person and will be remembered forever."

Melissa Semple posted: "She brought a light to everyone’s life, loved by everyone who ever met her. I lover her so much and will forever."

Police and fire services are carrying out a joint investigation into the incident.

A Police Scotland spokeswoman said: "Around 8.30pm on Sunday January 6 emergency services were called to a report of a fire at a property on York Street, Ayr.

"An 18 year-old woman was pronounced dead at the scene.

"A post mortem examination will take place in due course to establish the exact cause of death. Her family have been made aware.

"A 22-year-old man and a 49-year-old woman were taken to Ayr Hospital for treatment.

"The fire was extinguished by the Scottish Fire and Rescue Service and a joint investigation has been launched to establish the circumstances."

Scottish Fire and Rescue Service Local Senior Officer for South Ayrshire, James Scott, said the fire service were alerted at 8.22pm.

He said: "Operations Control immediately mobilised a number of fire engines and firefighters extinguished the fire.

"Sadly, one woman passed away at the scene.

"Our thoughts are with all of those who are affected at this time."

To donate to a fundraiser for Natalie's family, click here.