Their pregnancy may have already been a completely unplanned surprise, but family and friends of Ryan Gosling and Eva Mendes may be in for a bigger shock if the couple does indeed tie the knot later this year.

Eva Mendes And Ryan Gosling Expecting A Boy?

The couple, who are rumored to be expecting their first child together this fall, are reportedly planning a 'low-key' wedding-one which includes a guest list of zero.

"The one thing they agree on is there'll be NO guests," an insider told Heat Magazine July 25. "Ryan can't stand big parties and wants it to be kept under wraps between Eva and him."

Eva Mendes 'Blindsided' Ryan Gosling Wth Pregnancy News?

The news that not even their families would be invited to their nuptials reportedly won't go over well with the 40-year-old actress' family, but she is allegedly so excited to be marrying her boyfriend of three years that it doesn't bother her what her family thinks.

"Eva loved how Megan Fox did her wedding in 2010-with no one but her husband Brian Austin Green's son and the pastor there, so she's got the same thing in mind," the source said. "She knows it could upset her family, but she doesn't care. She's marrying the man of her dreams and, if that's the only way he'll agree to it, then fine."

However, though she wants to appease her man, Mendes could be disappointed by her beau's dream wedding location.

"He wants a registry office in New York or LA. He doesn't want to travel," the source added.

News that the couple was expecting broke earlier in July, after a fresh wave of rumors that they had split once again began making rounds, following Mendes' suspicious absence from the Cannes Film Festival, where Gosling's directorial debut, Lost River, was screened for the first time. Now, with the news that she is already seven months along, her absence has been chalked up to the fact that she may have been showing-and wanted to keep the baby news private.

Though the couple has never even really confirmed their romance to the press, it isn't the first time they've been reportedly considering marriage, as rumors they had become secretly engaged surfaced earlier this spring.