Nearly two months after news broke that Sofia Vergara and Nick Loeb were splitting up, he gave the Modern Family star a shiny new ring for her 40th birthday. One source tells PEOPLE the couple are engaged, but other sources say the actress does not consider herself engaged.

Loeb accompanied the actress to Mexico, where she celebrated her birthday with a weekend of festivities.

Sofia Vergara's son was on hand to film every moment of her 40th birthday celebration for his mockumentary YouTube series.

But Manolo Gonzalez, 19, may have captured more than he expected for Mi Vida Con Toty (which translates to My Life With Toty, Vergara's nickname).

It was an apparent marriage proposal.

In the video, Vergara is joined by boyfriend, Nick Loeb, and 107 members of her family and friends as they explore the Mayan ruins in Chichen Itza.

"Then one of my mum's dreams came true. As a little girl, she always wanted to go to the top of the pyramids. Unfortunately, people are not allowed to do that anymore. But since it was her birthday, her team worked for months on end to get her special permission to go up!" Gonzalez says.

Alongside Loeb, 36, Vergara climbs the stairs to the top of the pyramid. "Once they were to the top of the pyramid, my mother's longtime boyfriend, Nick, proposed to her," Manolo explains.

Soon after, the couple descends the stairs holding hands.

"Let me see the ring," Gonzalez says, as Vergara smiles and shows off the sparkler – but does not say she's actually engaged.

The next stop for Vergara's birthday was a festive lunchtime party. With a mariachi band playing in the background, Vergara sips on cocktails and waves her ring finger at the camera.

The marriage will be the second for Vergara, who has a son, 20, from a previous relationship.