Terceira Metade (English: Third Half) is a Brazilian dating reality series created and produced by Globoplay in partnership with Boxfish, which premiered on July 18, 2025.[1]
Hosted by Deborah Secco and featuring guidance from sexologist and author Regina Navarro Lins, the show follows committed couples open to expanding their relationship, who are joined by single participants interested in becoming part of a throuple.[2][3]
Format
In the first stage of the experiment, all cast members live in a beachfront house, where initial connections begin to form between the couples and potential third partners. Once trios are established, they move in together, sharing the same space and daily routine. In the final phase, each trio must decide the future of their relationship: continue as a throuple, return to life as a couple, or part ways entirely.
Cast
The original 17 cast members were revealed on July 7, 2025, by Globoplay. The lineup featured four couples and nine singles. In episode 4, three additional singles and one couple joined the experiment, bringing the total number of housemates to 22.[4]
During the first phase, the Key Ceremony takes place, where couples have the opportunity to choose a single cast member (among those who have shown interest) for an overnight date in the couple's suite. At the end of this phase, each couple offers the key to the shared home to the single they've chosen, where the trio will live together during the final phase of the experiment.
^Note 1 : Due to their inability to develop healthy connections, the production team decided to eliminate Bia & Liah in order to preserve their relationship.
^Note 2 : With their first choices blocked, Ana & Mauro and Jhessi & Marlon decided not to choose anyone for their dates and remained as couples only.
^Note 3 : Due to Ana's doubts and the couple's uncertainty, Ana & Mauro chose to leave the experiment in the first phase to protect their relationship.
^Note 4 : In the finale, each trio have to decide the future of their relationship: continue as a throuple, return to life as a couple, or part ways entirely.
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