article_snippet.sent: But in a twist that her sister Larissa could never have foreseen, the other woman turned out to be her sister Larissa younger sister Larissa Knipe.
article_snippet.sent: I was very protective of Larissa because Larissa was my baby sister,' Larissa says of Larissa happy upbringing. '
article_snippet.sent: Larissa wasn't just my sister.
article_snippet.sent: Larissa was like a best friend and I'd do anything for Larissa.'
article_snippet.sent: But all that changed when Larissa, who is seven years younger than Ms Bourne, moved into Larissa home when Larissa was 17.
article_snippet.sent: Although Larissa says there was nothing between Larissa and Steve to begin with, a night out when Larissa was 20 resulted in a liaison with just my sister's partner - and the start of an affair. '
article_snippet.sent: I was 20 when it first started with Steve,' Larissa confesses. '
article_snippet.sent: Rapprochement: Larissa is finally winning back just my sister after more than three years in the cold .
article_snippet.sent: Then, a few months later, Larissa revealed Leanne Bourne was pregnant and claimed not to know who the father was. '
article_snippet.sent: Larissa had never really had a boyfriend.
article_snippet.sent: If Larissa had, I'd never met any.
article_snippet.sent: Then one day I came home from work and Larissa said Larissa was pregnant,' Leanne Bourne recalls.
article_snippet.sent: But Larissa was left even more suspicious by Larissa sister and Mr Allsop's reaction. '
article_snippet.sent: Larissa and Steve were both over the moon about it, really happy,' Larissa says. '
article_snippet.sent: Putting Larissa fears to one side, Larissa supported just my sister and was there when Larissa gave birth to Larissa son Logun in August 2011.
article_snippet.sent: Larissa also spoke of the moment that Larissa realised Larissa sister's baby had been fathered by Larissa partner . '
article_snippet.sent: Larissa, who moved out into a council flat of a friend own shortly afterwards, continued to deny all talk of an affair.
highlights_snippet.sent: Was horrified when the other woman turned out to be the other woman sister Larissa .
  
highlights_snippet.sent: Larissa even gave birth to Steve's child in August 2011 .
  
highlights_snippet.sent: Leanne and Larissa appear on 
highlights_snippet.sent: her sister Larissa Had My Boyfriend's Baby - and Other Betrayals, tonight at 10pm on Channel 5 .