Dylan McDermott and Maggie Q Split Following 4-Year Engagement

Dylan McDermott and Maggie Q have split.
Four years after the American Horror Story actor and Designated Survivor actress got engaged, the couple is going their separate ways, a source confirms to PEOPLE.
Reps for McDermott and Q have not commented.
They first sparked relationship rumors in fall 2014, when McDermott, 57, and Q, 39, were spotted getting cozy while shopping in Brentwood.
In October of that year, a show insider told PEOPLE that the Stalker castmates were romantically involved.
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