TRAGIC mum-of-one Charlotte Curtis, 19, plunged to her death from a road bridge just hours after finding out that a boyfriend had cheated on her during their relationship, an inquest has been told.

After her death a draft text message was found on her mobile phone telling the ex-boyfriend that the next time he saw her she would 'be in a coma.' But the message had not been sent to the boyfriend - named only as 'Spider' at the inquest in Gloucester.

Coroner Alan Crickmore heard that the teenager had found out about her ex-boyfriend's infidelity earlier that evening when she met the other woman in a club.

Later that night Charlotte fell from the bridge onto a busy dual carriageway near Cirencester, Glos, while on her way with friends to a late night service station to buy food.

Mr Crickmore ruled that there was not enough evidence to say whether her death was suicide or an accident.

Charlotte's body was found 50 yards northbound from the Burford Road bridge above the A417/ A419 on August 17 last year. She was declared dead at the scene by paramedics at 2.53am that day.

She had suffered massive injuries, which suggested she had been struck and carried by a vehicle, the inquest heard.

Sam Garrett told the inquest that he went out with a group of friends, which included his sister Charlie, Charlotte and another man called Mark to a pub before heading to the "Rock" nightclub in Cirencester.

He walked Charlotte home at one point during the night because she wanted to change her shoes before returning to the nightspot after 15 minutes, he said.

She had talked about 'Spider', he said, but he had not really paid attention to what she said.

The four of them went back to Charlie's house after leaving the club, before he decided at 02.10am that he was hungry and they all left to walk to the service station, he said.

He and his sister went ahead with Mark and Charlotte following and when they had crossed the bridge he turned to look back and saw Mark midway across with Charlotte behind texting on her phone.

The next thing he recalled was hearing 'Charlie, Charlie, help!" and both of them ran back to find Mark on his own.

He said words to the effect of "help, she's just jumped over the bridge," said Mr Garrett.

He said they looked over the bridge and saw her 40 to 50 yards up the carriageway, he could see her.

"I assumed she'd been hit by a vehicle," he said, adding that her handbag had been left upright on the bridge.

Mark Fallon told the court that he started drinking at 4pm on August 16 before going out and he saw Charlotte, whom he had known for two weeks, have at least two drinks that evening.

Later, when he was walking with her to the garage she was "texting" on her phone and seemed quieter when she was doing this.

Halfway across the Burford road bridge he turned round to ask her for a cigarette and later noticed she had disappeared, he said.

"I had only seen her 20 to 30 seconds before," he said. "I thought she was messing around."

Mr Fallon said he jumped over some railings onto the grass and ran down the carriageway to try and trace her.

Mr Garrett's sister Charlie said that while walking Charlotte had been "moaning about her ex-boyfriend" and seemed "quite bitter about the situation" but her behaviour was as normal when she had been drinking.

Miss Garrett said she thought Charlotte was quite a "mick taker" as the week before she had hung out of a first floor window.

"She was saying 'do you dare me to jump?' I said 'Charlotte - don't be so silly'," she told the coroner.

Home Office pathologist Dr Derek James said Charlotte had suffered 46 external injuries and numerous internal ones, all consistent with a fall to the ground from a height or movement against a rough surface like a road and having been trapped, moved under a vehicle.

There was no evidence of an assault, sexual or otherwise, he said.

Toxicology showed she had 185mlg of alcohol in 100ml in blood - around two and a half times the legal drink drive limit.

He put the cause of death down to multiple injuries.

Collision investigator Malcolm Shute, who investigated the incident, was asked by Mr Crickmore if it would have been possible for someone to walk into the barrier and stumble over it.

"Very unlikely Sir," said the officer. "It's high enough to prevent anyone over-balancing."

He added that it was not unheard of for larger vehicles to run over bodies without knowing they had done so.

Det Sgt John Wood said his investigations of Charlotte's mobile revealed that while she was out that night she was telling one of her friends at her "dismay" that a relationship with "Spider" was over and she wanted it to be rekindled.

He said memories of the romance, which ended three months previously, were stirred up that night when she met a girl called "Kirsty" at the club. She learnt from Kirsty that Spider had 'potentially cheated' on her while still in a relationship with Charlotte, said the officer.

A draft message, he said, found on her phone addressed to Spider, looked to have been drafted before 2am, read "Dont expect to see me" and "the next time I'll be in a coma".

But, said Det Sgt Wood, some of the other messages also found on her phone were "forward looking".

Mr Crickmore said: "During the course of that evening Charlotte discovered Spider had been unfaithful during her relationship with him - although she seemed to come to terms with it with the woman she was speaking to.

"She spent some time texting him during the evening," he added.

Mr Crickmore said the 'coma' message in the draft folder indicated a threat of self harm but was not suicidal as it did not mention death.

"It's hard to say when that threat was drafted but, I think, it was, during the course of the evening."

He said she had no significant medical history although had suffered bouts of depression and suicidal ideas but was not suicidal.

The coroner summed up. "For wahtever reason Charlotte climbed over the parapet and fell or jumped to the carriageway below. I'm mindful that she was intoxicated.

"She put her handbag down rather than dropping it."

He said the text message was no indication that she wanted to kill herself and it was never sent.

He said he couldn't say it was an accident either.

"This is one of those cases where there are sufficient gaps in the evidence to prevent me from being certain," said the coroner, who recorded an open verdict.

After the inquest her mum Diane Lyons said: "It gives us no answer. We may never know."