Nadine Ascencao, Tamerlan Tsarnaev’s ex-girlfriend, has revealed that he tried to turn her against the U.S. and beat her if she wore Western clothing.

Nadine Ascencao, 24,  says that over the course of her relationship with Tamerlan Tsarnaev, he was transformed from a fun-loving student into an Islamic extremist who shunned American life.

She lost her virginity to the Chechen immigrant and said she was besotted with him – but now she admits she had a “lucky escape”.

Tamerlan Tsarnaev, 26, was killed in a stand-off with police four days after he and his brother Dzhokhar, 19, apparently set off two bombs at the Boston Marathon on April 15.

Since the terror attack, which left three by-standers dead and more than 270 injured, Tsarnaev brothers’ interest in Islamic terror has been revealed.

Nadine Ascencao, Tamerlan Tsarnaev’s ex-girlfriend, has revealed that he tried to turn her against the U.S. and beat her if she wore Western clothing

Nadine Ascencao told The Sun: “One minute he’s this funny, normal guy who liked boxing and having fun, the next he is praying four times a day, watching Islamic videos and talking insane nonsense.

“He became extremely religious and tried to brainwash me to follow Islam. Tamerlan said I couldn’t be with him unless I became a Muslim. He wanted me to hate America like he did.”

Tamerlan Tsarnaev apparently stopped her from listening to pop music or watching television, and tried to control who she spent time with.

“Tamerlan told me I should only talk to Muslim girls, not other <<slutty>> girls,” Nadine Ascencao said.

When she wore Western clothing, Tamerlan Tsarnaev would fly into a rage and even attack her, Nadine Ascencao added.

“He hated my tight trousers and made me wear long skirts,” Tamerlan Tsarnaev’s ex-girlfriend told The Sun.

“Towards the end I was wearing a hijab. He once ripped a pair of my jeans and hit me in the face with them.”

Nadine Ascencao and Tamerlan Tsarnaev’s relationship seems to have hit the rocks after he started seeing Katherine Russell after meeting her at a nightclub.

Tamerlan Tsarnaev would apparently play the two women off against each other, pitting them in competition to learn Islamic verses.

A police report from July 2009 indicated that he slapped Nadine Ascencao during an argument at their home in Cambridge, Massachusetts.

She called 911 to complain, but although Tamerlan Tsarnaev was arrested and charged with assault the charges were dropped before trial.

The couple broke up later that year after three years together, and Tamerlan Tsarnaev went on to marry Katherine Russell, who converted to Islam in order to be with him.

Nadine Ascencao says she had no contact with her ex-boyfriend in the years before he launched his terror attack this month, but was questioned by the FBI over her links to the Islamic extremist.

“When they said Tamerlan was dead, I didn’t cry,” she told The Sun.

“I was more shocked Dzhokhar was involved. He was a nice kid.”

Dzhokhar Tsarnaev, 19, is currently in police custody in hospital after being injured in a shoot-out with police which led to his arrest hours after Tamerlan’s death on April 19.