Trigonometry

A cash-strapped couple take in an enigmatic lodger who changes their lives forever.

Gemma, Kieran and Ray try to avoid each other but fate throws them back together.

As Gemma and Kieran's wedding approaches, their lives increasingly intertwine with Ray's

Gemma and Kieran's wedding day. What will they do after Ray's admission the night before?

While Kieran and Gemma honeymoon in Finland, Ray tries to move on with life in London.

A visit from Ray's mum places the triad's relationship under the microscope.

The triad come out to their friends and family, sparking some surprising reactions.

The triad are forced to look to the future and make some big decisions.