Quinn dated Sam briefly in Season Four, but the relationship ended when Sam discovered he was in love with Mercedes. Quinn soon starts dating Brody, who embraces her for who she is. They become engaged in Season 5 and marry in Season 6. After marrying Brody, Quinn leaves California for Texas where Brody has been offered a job.
In Season Seven, it is revealed that Quinn is pregnant. She and Brody are overjoyed and think they have found a way to stay together by moving to Wisconsin so that Brody can work at his father's factory while Quinn gives birth. However, this plan falls through when it is later revealed that the baby isn't Brody's after all. The couple decides to go ahead with the pregnancy anyway and hire a surrogate mother. However, this also fails when it is revealed that the baby isn't Quinn's either. Heartbroken, Quinn ends up back in California where she gets a job as a public defender. She eventually finds out that her sister Chelsea is also a lawyer and they make up before Quinn goes into court to defend her first client. In the final episode of the series, it is shown that Quinn has become a successful public defender and is now married to David Silver. They live in a house by the ocean where they raise their son Jack.
Quinn was introduced as a recurrent character for the first three seasons before being elevated to the main cast for the last three. She is a major character and has been praised for her portrayal of neurodiversity issues such as autism spectrum disorder (ASD).
Brody is a student at New Directions who takes an interest in Quinn despite knowing that she has ASD. He helps her come out of her shell and they begin dating in Season 3. They get married in Season 5 and divorce in Season 6. It is revealed that during their marriage, Brody had an affair with Rachel's ex-boyfriend Kurt (which leads to him being sent to Regionals).
It is later revealed that after her divorce from Brody, Quinn began dating Mr. Schue (the character she plays on Glee). However, this relationship ends when Mercedes (her character) dies in a car accident. After this tragedy, Quinn decides to start fresh and move on with her life. She begins dating Jake Puckerman (the actor who plays Finn Hudson), but breaks up with him when he joins Vocal Adrenaline. She then starts dating Ryder Lynn's (Blake Jenner's) character Artie, but leaves him too when she finds out that he has been lying to her about not having any other partners.
Their relationship begins in Season Two with the episode Duets and ends with the episode Comeback, in which Sam discovers Quinn cheated on him with Finn. The two do not get back together at first because of their different priorities in life: while Quinn has problems figuring out what she wants to do with her life, Sam wants to be a star baseball player. However, they eventually reconcile and decide to try again for marriage.
Here's how they broke up:
Quinn cheats on Sam with Finn (Season Two, Episode Five "Duets"). After this incident, they don't speak for several months. When Sam finds out about this betrayal, he doesn't forgive her immediately but tries to understand where she was when he needed her. Eventually, he decides that they aren't ready for another relationship and they part ways for good.
They meet up again by Season Three near the end of the episode "Comeback". At first, they don't want anything to do with each other because they think they can never get back together again, but later on, they realize they still love each other very much and decide to give their relationship another chance. This time, they get married after discovering that they are both free on the same day.
Quinn Fabray's love connection with Sam Evans, sometimes known as Quam or Fabrevans, is known as the Quinn-Sam Relationship. However, their relationship continues through various episodes past Comeback as both characters' stories progress.
They first meet when Will Schuester invites his glee club to New York for a week of performances. When Quinn sees that Sam is one of the members, she invites him to join her group, the Warblers. They soon develop a friendship and by the end of the second season, they begin dating exclusively. However, this only lasts until Season Three when they break up after Sam finds out about Quinn's affair with Finn.
However, this doesn't last long since they get back together near the end of the season when it appears that Sam has moved on from Brittany to Santana. But again, they break up for good this time due to differences in opinion on how to deal with Finn's death. After many twists and turns, they finally get back together at the end of the fifth season but once more, they break up for good this time because Sam wants to move on with his life.
But even though they've been apart several times, they always seem to come back to each other in some way or another.