Lorna Morello-Muccio

Lorna Morello, played by Yael Stone, is an inmate at Litchfield Women's Prison in Orange is the New Black. Lorna is based on multiple characters from Piper Kerman's 2010 memoir Orange is the New Black: My Year at a Women's Prison. 

During season 1 she is in a relationship with fellow inmate Nicky Nichols (played by Natasha Lyonne). She eventually ends the relationship because she no longer wants to cheat on her (male) fiancé, Christopher. It later turns out that she had been on one date with Christopher and then stalked him and even puts a bomb under his girlfriend's car. 

Eventually, she marries Vince Muccio.