The Dick Van Dyke Show (1961)

S3E3 Laura's Little Lie

In this episode, the question of Rob and Laura's marital status arises when Rob requests Laura to sign some insurance documents that she never completed. In an effort to conceal a secret from Rob, Laura goes to great lengths. Frustrated by what he perceives as losing his wife, Rob uncovers a shocking truth: he unknowingly married a 17-year-old Laura.