Darvill said it is admirable that Rory continues to protect his wife Amy at all costs, even after dying and being resurrected on more than one occasion.
"It's funny the way Rory deals with things. He's quite nervous and doesn't really want to put himself in danger but as soon as it's anything to do with Amy being in danger he'll just throw himself in straightaway," Darvill told reporters on a recent conference call.
"Even though all these incredible things have happened and all these horrible things have happened, his relationship with Amy is still the strongest thing in the world. It's very real and very good and he's still completely, wildly in love with her."
Darvill recently compared Rory to a bumbling action hero during a recent interview with Digital Spy.
Doctor Who continues with the episode 'The God Complex' on Saturday on BBC One in the UK and BBC America in the US.
> Doctor Who: 'The God Complex' in pictures
> Doctor Who star comments on Rory and The Doctor's relationship
Watch Arthur Darvill discuss Doctor Who with Digital Spy below: