Can you have a happy, healthy relationship of three? Today in Focus hears about good and bad throupling experiences. With reporting from Kitty Drake

By any measure, it was a textbook fairytale wedding. Set against the backdrop of a sandy beach in Mexico, the waves gently lapped against the shore as guests took their seats. The groom was waiting on the sand, dressed in a blue linen shirt and grinning from ear to ear. Then out came the brides.

Helen Pidd talks to happy throuple Rachael, Aaron and Kasey about their unusual wedding, how they got together, and how they make their three-way relationship work. Helen hears, too, from Caitlin, whose throuple experience ended much more painfully.