Heather, who plays ditzy Brittany in the hit US show, and Taylor welcomed their first child into the world last year and are now said to be planning a wedding.
According to Us Weekly, a source says Heather has been spotted wearing a dazzling engagement ring - and a giant grin!
The insider told the American magazine: "They're super happy together and it just made sense."
Actress and dancer Heather gave birth to the couple's son in September 2013 and they called him Elijah.
Heather and Taylor met at high school and, although she had such a high profile in Glee, they prefer to stay out of the limelight.
During her pregnancy, Heather didn't make a big announcement and instead let her growing tummy do all the talking.
Given this, we're not expecting an engagement announcement either. If the rumours are true, then congrats to them both!
Watch Brittany take on Britney Spears in Glee here: