Here are some of the things you should know about these lovebirds and their passionate, whirlwind relationship.
Sources reportedly revealed to the New York Post that the couple is engaged, and if the engagement rumors are true, then this will be the American Horror Story actor's second time down the aisle. He was previously married to actress Shiva Rose for 13 years, from 1995 to 2009.
Q and McDermott both star in the hit CBS TV series Stalker. Q plays Lieutenant Beth Davis, who heads up the LAPD's Threat Assessment Unit, while McDermott stars as her investigative sidekick Detective Jack Larsen.
The lovebirds first sparked romance rumors in September after they were spotted looking very content in each other's company during a casual shopping trip in Brentwood, California.
When the couple stepped out together at the 2015 Golden Globes Awards after-parties, according to the New York Post, Q was sporting a massive diamond sparkler.
According to the Daily Mail, Sunday's awards ceremony was the first time in this pair's four-month relationship that they went public as a couple.
Q and McDermott make one seriously adorable couple, and when they were spotted at a Lakers basketball game at LA's Staples Center last November, they looked extremely happy. The pair couldn't stop smiling and cuddling as they watched their team from courtside seats.
During an interview with HollywoodLife, McDermott was asked why Stalker was the best show of the new season, and his response? He simply stated, "Maggie Q." Awww!
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