Robert Downey Jr.’s wife, Susan, is pulling back the curtain on how they keep their 18-year ironclad marriage strong. “We do have a two-week rule, which often feels too long, but we don’t go ...

Robert Downey Jr.'s wife Susan tells PEOPLE the family has a '2-week rule' to ensure they are never apart for long stretches at a time.

During the Q&A, Downey Jr.'s wife and producing partner Susan Downey also spoke about her husband and late father-in-law's decisions to get sober. "If anybody has ever dealt with someone with ...