Which seemingly meant that George Michael and Maeby were indeed related by blood, though not as closely as it was originally depicted.
In Season 5, it was then revealed that Lindsay was the biological daughter of Lucille’s mother, Mimi.
Of course, this entry is incestuous in the most complicated of spirits, as Maeby’s mother Lindsay is later revealed to be an adopted daughter of the Bluth family and isn’t blood-related.
So I guess it was fine that they ended the season making out in full view of everyone?