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These lovebirds are blurring their professional and personal lines!

On Wednesday, the trades reported that Sean Penn had signed on to direct a new film The Last Space, which allegedly takes places in the refugee camps of Sudan and Liberia.

The notable humanitarian has enlisted a fellow do-gooder, his new lanky love, Charlize Theron, for the lead in the hush-hush project, reports The Wrap. Her role in the film is being billed as a "lead" but it's unclear if its a large ensemble film or if The Last Space's focus is on one character. The film will also star Blue is The Warmest Color actress Adele Exarchapoulos.

Theron and the Milk actor went public with their relationship at Penn's Help Haiti event on Jan. 11.

After taking off 2013 to focus on her personal life, Theron is slated to star in Seth MacFarlanes A Million Ways To Die In The West which is due out in May, as well as the thriller Dark Places, opening in theaters this fall. We can't wait to see the stunning star on the big screen!