Simon Gray 
Japes (NHB Modern Plays) [EPUB ebook] 

A funny and sardonic play about two brothers trapped in a love triangle with the woman they both love.
Two brothers share the house they grew up in and then share the woman they both love. But as time passes and their family grows, the ties that bind them are tested to the limit. Spanning thirty years and offering a new slant on the eternal triangle, the plot is driven by involuntary cruelties, damaging accidents of fate and the terrible ravages of time.
'a damned fine play' – Express