Andrew McLaughlin, of Banknock, was found guilty of seven charges, including multiple rapes, following a trial at the High Court in Stirling.
The prosecution presented evidence from both victims who told how they had no concerns about the 42-year-old when they first met him.
But jury heard how he soon began to abuse, intimidate and control them.
His offending behaviour included accusing them of cheating on him, taking control of their mobile phones, banning them from social media and isolating them from their friends and family.
McLaughlin would also threaten to harm himself in a bid to emotionally manipulate the women.
The abuse soon became violent and included the repeated use of non-fatal strangulation.
He would seize both women by the neck, which resulted in them being unable to breathe.
On one occasion, McLaughlin held the mouthpiece of a scuba tank to the mouth of one woman, telling her that if she took too much oxygen she would die.
He was also found guilty of serious sexual offending against both women.
The offending took place at various locations in the Falkirk area and elsewhere between 2019 and 2023.
On 11 June 2026, at the High Court in Edinburgh, McLaughlin was given a 14-year extended sentence with 11 years in custody.
His name has been added to the sex offenders register indefinitely and non-harassment orders were also granted.
Faye Cook, Procurator Fiscal for High Court Sexual Offences, said:
“Andrew McLaughlin engaged in a sustained course of controlling, violent and sexual abuse against two women.
“His repeated use of non-fatal strangulation is a particularly dangerous form of violence, carrying a high risk of serious injury and death.
“It left both women fearing for their lives and caused significant harm.
“I want to recognise the strength of the women who gave evidence. Doing so takes courage, and their testimony was crucial in bringing this individual to justice.
“Scotland’s prosecutors will continue to use every available tool to pursue those who abuse women and girls and to protect the public from harm.”