Charlize Theron and Sean Penn are reportedly looking to tie the knot in the near future and adopt a child together.

Charlize Theron, Sean Penn To Marry

Insiders claim that the couple plans to marry while spending time in South Africa this summer working on The Last Face in which Theron, 35, is starring and Penn, 53, is directing. "They want to get married very soon," a source told Us Weekly.

Theron, already a mother to adopted son Jackson, 2, apparently always planned to give him a little brother or sister. The actress "always intended to have another child,” according to the source, who added, “Sean is revitalized with Charlize.”

Penn, who was married to House of Cards star Robin Wright from 1996-2010, has two children from the marriage – Dylan, 23, and Hopper, 20.

Theron and Penn went public with their relationship roughly eight months ago following nearly two decades of friendship. "Charlize has seen Sean grow up," the insider said. "He's a wiser soul and much more patient," the source added, revealing that Penn "has become a strong role model" to Theron’s son.

The Last Face, which is scheduled to begin filming on location in Africa in August, is a love story set against the backdrop of a war-torn Africa, according to The Hollywood Reporter. Theron’s character is the director of an international aid organization who ends up in a passionate romance with a relief-aid doctor played by Javier Bardem. Penn is adapting the film from a script by Erin Dignam (The Yellow Handkerchief).