Robert Pattinson
Twilight actor and FKA twigs spotted wearing promise ringsReuters

Robert Pattinson's relationship with Kristen Stewart was a troubled one, but it looks like the Twilight star has finally found his soulmate in FKA twigs.

People Magazine reported that Pattinson may be ready to tie the knot with the 26-year-old singer, whose real name is Tahliah Debrett Barnett, as the two were spotted wearing promise rings, showing off their commitment towards each other.

"He wants to marry her," a source told the website, adding that Pattinson is "much more calm and happier than before."

It also appears that the two could have taken a real big step in their relationship, as reports suggest that the couple are living together.

"They are inseparable when they are together," the insider said. "They live at his house."

According to reports, the Remember Me actor and the English singer-songwriter were spotted in Paris, where the latter is scheduled to perform.

PopSugar reported that Pattinson stuck by girlfriend FKA twigs's side as they made their way from the train station to Casino de Paris together.

"[FKA] twigs is scheduled to perform at the venue this evening, and we can't help but assume that Robert will be the front and center for the show, " said the website.

The couple started dating in August, 2014 and Pattinson has been very open about his relationship with twigs, unlike with his former girlfriend Kristen Stewart.

Kristen Stewart
Kristen Stewart is reportedly dating Alicia Cargile Getty Images

Meanwhile, there are rumours that Pattinson's ex, Kristen Stewart, is romantically involved with her friend Alicia Cargile.

The couple were seen holding hands at an airport last month and according to In Touch magazine Cargile and Stewart are even living together.

"Kristen recently bought a huge loft in downtown LA and she asked Alicia to move in," an insider told the magazine.

"It seemed pointless to live apart, since they were with each other every day."

Also, in a new video, Pattinson was seen being bombarded by questions over ex-girlfriend Kristen Stewart coming out as a possible lesbian.

Watch his reaction here: