Court was told Haden Didier caught Kurlan Rick Joseph in bed with a woman and stabbed him 13 times, leaving the knife embedded in his chest when he left the scene.
Didier was convicted on Dec. 5 of second-degree murder.
On Friday, Didier addressed the court, expressing deep remorse and saying he would do anything to turn the clock back in time.
He said he loved Joseph and described himself as "deeply broken."
Justice Peter McIntyre told court he believes Didier is remorseful and said this crime was out of character as he had no criminal past.
Didier was an aspiring flight attendant for WestJet.
The judge told court this was a case of domestic violence but there was no evidence of ongoing abuse.
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