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.
It will be the first for McDaid, 37, who hails from Derry, Northern Island.
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