Talulah Riley still loves her estranged husband Elon Musk, despite reports he's been dating Amber Heard.

Talulah Riley

Talulah Riley

The 'Pride and Prejudice' star filed for divorce from the 45-year-old Tesla Motors billionaire for a second time in March but has declared she still has strong feelings for Elon and thinks they could even reconcile again in the future because he's her "best friend".

Talulah confessed: "We really are best friends. I'll always love him; I'll always be there for him."

And when asked if that sounded like the basis for a good marriage, she coyly replied: "You'd think."

The couple met in 2008 and got married two years later in Musk in 2010 but the marriage broke down in 2012 and the actress was reportedly awarded $16 million in the divorce settlement.

The pair reconciled and walked down the aisle again in July 2013 but Talulah, 30, filed for divorce again in December 2014 before withdrawing the action and then going on to file legal separation papers again in March 2016.

In an interview with The Times newspaper, Talulah summarised their roller coaster relationship by saying: "We got married, we got divorced. We got remarried, we filed for divorce, we retracted that divorce. We filed for divorce again recently."

Since March, Elon - who is worth a reputed $12.3 billion - has been spending time with 30-year-old Amber following her acrimonious split from husband Johnny Depp.

The pair recently met up in Miami, Florida, as Elon was there for the launch of a SpaceX Rocket from Cape Canaveral, while Amber was there for work and sources claim they "saw a lot of each other".

They also met up in London this week partying with the cast of 'Suicide Squad' including Jared Leto and Cara Delevingne.