Is Sofia Vergara Engaged?

UPDATED 07/10/2012 at 08:15 PM EDT • Originally published 07/10/2012 at 05:30 PM EDT

Looks like they're back on – in a big way.

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.

An unnamed Mexico-based rep for the star tells Peopleenespanol.com, "As of today, Sofia is not engaged."

Loeb accompanied the actress to Mexico, where she celebrated her birthday with a weekend of festivities. On Monday, a Vergara pal posted a photo on Twitter of the actress wearing a sparkler on her ring finger in Mexico. Tuesday, Wonderwall reported the couple are engaged.



The actress and Loeb rekindled their relationship at the beginning of June, though a source told PEOPLE, "There are compromises to work out on both sides."

Loeb, a businessman with political aspirations, first made major headlines with the actress when she was by his hospital bedside in September 2010, following a serious car accident.