What is Trouple?
1.
A couple who has a friend that is always with them becomes a trouple. The third person has to be friends enough or have been hanging out with the couple long enough to not feel like a third wheel, thus becoming a trouple.
It was decided that Gary was part of a trouple when he went with Frank and Tracy to Las Vegas.
See
2.
A three-way couple in a long term relationship
Mike, Rick and Steve have been together for six years. They're a trouple.
See
