Although we thought he’d never settle down, Hugh Grant has gone and done the unthinkable – he’s gotten married.

The 57-year-old actor married his longtime girlfriend Anna Eberstein in a low-key ceremony at a Chelsea register office in London on Thursday.

This was definitely not a royal wedding style event.

There was not a bridal gown in sight, with the 39-year-old Swedish television producer dressed casually in a white miniskirt and fitted pale blue shirt.

A smiling Hugh was seen dressed in a navy blue suit as the newlyweds posed for photos on the steps of the register office, as shown by The Sun .

Hugh Grant married his girlfriend Anna Eberstein in London on Thursday. Image: Getty Images

The whole affair was incredibly casual, with theLove Actuallyactor even spotted on a London bus earlier in the day, already dressed in his suit.

Even his choice of wedding ring was a little... offbeat.

While Anna opted for a traditional gold band, Hugh chose an ornamental silver ring with three red stones, which looked like something he'd picked up at a market stall, possibly from a woman called Sunshine.

In fact, media outlets covering the wedding noted that his wedding ring bore a striking resemblance to a comedy ring used in his 1994 hit movieFour Weddings and a Funeral.

"It looked like a small affair, just a few friends and family," an onlooker toldThe Sun.

The perpetual bachelor announced his engagement only days earlier.

It came as something of a surprise, given his previous comments about marriage during an interview on Howard Stern's SiriusXM radio show just two years earlier.

"If you ask me the question, 'Do I think human beings are meant to be in 40-year-long monogamous, faithful relationships?' No, no," he said in 2016, as reported by People .

The actor - who has three children with Anna, and another two with his ex, Tinglan Hong - then went on to say the key to a successful marriage is having affairs.

"I think there’s something unromantic about marriage," he finished.

"You’re closing yourself off."