Arnold Schwarzenegger reunites with Maria Shriver to attend former First Lady Nancy Reagan's funeral

Maria Shriver filed for divorce from husband of 25 years Arnold Schwarzenegger in 2011 after discovering he had been unfaithful.

But five years later the pair seem to be once again on good terms as they came together to attend former First Lady Nancy Reagan's funeral in Simi Valley, California.

The former California Governor, 68, and his ex, 60, sat beside each other for the services and were seen keeping close under an umbrella as they walked to another one of the day's events.

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Getting along nicely: Arnold Schwarzenegger came together with ex-wife Maria Shriver to honor former First Lady Nancy Reagan at her funeral services in Simi Valley, California on Friday

Maria looked sophisticated in a black dress, worn with a fitted, coordinating black jacket and silver, cross necklace.

She carried a black purse with a gold chain strap, and her long, brunette tresses were worn in a center part and styled straight.

She kept her make-up simple for the somber affair, and sported a few pieces of gold jewelry as she remembered the former First Lady.

Supportive: The duo - who split in 2011 - sat together for Friday's services

Sharp: Maria looked sophisticated in a black dress and coordinating jacket while Arnold donned a fitted, navy blue suit 

Arnold also looked smart, sporting a fitted, navy blue suit along with a crisp, white button down and a blue patterned tie.

He looked to be in good spirits as he was spotted chatting with author Peggy Noonan ahead of the services.

Many turned out to honor the former First Lady, who had passed away on Sunday of congestive heart failure at age 94.

In good company: The former California Governor was one of many politicians in attendance, along with former President George W. Bush, former Secretary of State Hillary Clinton, and current California Gov. Jerry Brown

In a good place: The former couple - who split after 25 years of marriage - looked to be getting along as they reunited to honor the former First Lady on Friday 

Sophisticated: The former Governor of California was well-dressed for the occasion as he had suited up for the services

Former President George W. Bush and former First Lady Laura Bush attended, as well as First Lady Michelle Obama and former Secret of State Hillary Clinton. 

There was a large celebrity presence as well, including Tom Selleck, Anjelica Huston, Melissa Rivers, and John Stamos.

Meanwhile, Maria filed for divorce from Arnold back in 2011 after it was revealed that the actor had fathered a secret love child with their housekeeper.

Beloved: Reverend Stuart A. Kenworthy, Vicar, Washington National Cathedral presided over a ceremony attended by 1,000 guests wanting to honor the former First Lady 

Touching: Patti Davis, Nancy's daughter, shared an emotional tribute as she described her turbulent relationship with her mother and their undying love

Honoring her memory: The former First Lady - pictured here being helped by Marine Lt. Gen. George J. Flynn as she arrived for a wreath laying ceremony at the memorial of her husband former U.S. President Ronald Reagan in 2011 - passed away on Sunday of congestive heart failure at age 94

The former Governor and First Lady of California have four children together - Katherine, 26, Christina, 24, Patrick, 22, and Christopher, 18. 

Curiously, TMZ reported back in October that Arnold had yet to sign the papers and finalize the divorce.

The two reportedly worked out the financial settlement ages ago, agreeing to split roughly $400 million between them.

Having a chat: Arnold looked to be in good spirits as he spoke with author Peggy Noonan ahead of the services

It is not known why the star isn't ready to formally quit the marriage, as he has moved on with Heather Milligan, 40, whom he has been dating for almost three years.

The Twins star and the blonde physical therapist have been together since meeting in late 2012.

However Maria's Catholic faith is thought to be part of the reason behind the pair's continued legal relationship. 

Dragging his feet: This past October it was reported that Arnold had yet to sign the divorce papers to officially end his marriage with Maria