The couple, who have been dating since October 2013, announced their engagement simultaneously on Twitter.
They Tweeted the same sweet selfie (below), with the bride-to-be captioning hers, “I’m engaged to him!” and the groom-to-be Tweeting, “I’m engaged to her!”
The couple were introduced by British singer-songwriter Ed Sheeran.
This will be the second wedding for Courteney, 50, who was married to David Arquette from 1999 to 2013.
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It will be the first for McDaid, 37, who hails from Derry, Northern Island.
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