Facebook's Sheryl Sandberg is all smiles at a Garth Brooks concert with new CEO ...

Facebook's COO Sheryl Sandberg has been spotted at a country music concert with her new boyfriend - after being set up by her late husband's brother.

Sandberg, 49, and beau Tom Bernthal, 45, who is the co-founder and CEO of Kelton Global, went to Garth Brooks' concert in Boise, Idaho, on Sunday night.

During the night the happy pair were seen smiling for pictures with the Friends In Low Places singer and his wife Trisha Yearwood at Albertsons Stadium. 

The couple were set up by Bernthal's best friend and Sandberg's brother-in-law Rob Goldberg, reports People. 

Facebook's COO Sheryl Sandberg has been seen at a Garth Brooks country music concert in Idaho with her new boyfriend and CEO of Kelton Global Tom Bernthal, pictured together

Facebook's COO Sheryl Sandberg has been seen at a Garth Brooks country music concert in Idaho with her new boyfriend and CEO of Kelton Global Tom Bernthal, pictured together

Sandberg's late husband Dave Goldberg died suddenly in 2015 after he suffered a heart attack while on vacation in Mexico to celebrate a friend's birthday.

The source said: 'Tom is Rob’s best friend, and it is really special that Dave’s brother was the one to connect them.

'He’s this really nice, down to earth guy. They’re both devoted parents. It’s a nice thing that it has worked out so well.'

Although the couple are based in different U.S. cities, they are said to see each other regularly and are making their relationship work by 'travelling a lot'.

Dave Goldberg died aged 47 of cardiac arrest after falling off a treadmill while the family was vacationing in Mexico in 2015.

In Option B: Facing Adversity, Building Resilience, and Finding Joy, Sandberg reveals how she found her husband on the floor.

Sandberg posed with the singer's wife Trisha Yearwood, pictured together, at the event and wore cowboy boots for the event

Sandberg posed with the singer's wife Trisha Yearwood, pictured together, at the event and wore cowboy boots for the event

The businesswoman was introduced to her new partner Bernthal by her late husband Dave Goldberg's brother Rob. She is pictured with Mr Goldberg in 2013, two years before his death

The businesswoman was introduced to

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