1. Quinn Fabray: Sam and Quinn had a brief relationship in Season 1. Quinn was pregnant with Finn's child at the time, and she and Sam got together as a way to cope with the situation. Their relationship didn't last long, as Quinn's pregnancy was revealed and she chose to be with Finn.
2. Mercedes Jones: Sam and Mercedes started dating in Season 2. They had a strong connection and shared a love for music. Their relationship was tested when Sam cheated on Mercedes with Brittany, but they eventually worked things out and stayed together for a while.
3. Brittany S. Pierce: Sam and Brittany had a casual relationship in Season 2. They were both part of the glee club and had a mutual attraction, but their relationship didn't go beyond a few kisses.
4. Tina Cohen-Chang: Sam and Tina dated briefly in Season 3. They were both members of the glee club and had a shared interest in music. Their relationship was short-lived, as Sam realized he had feelings for Quinn and ended things with Tina.
5. Jillian Anderson: Sam dated Jillian, Santana's cousin, in Season 3. They had a brief relationship, but it didn't last long.