The boyfriend of Finland’s first openly gay pro hockey player allegedly confessed to gunning down his much younger beau with a hunting rifle over the weekend — just weeks after they called it quits on their relationship. Janne Puhakka, 29, was found dead Saturday night inside his home in Espoo where he had been living with his 66-year-old partner, Rolf Nordmo, prior to the break-up, Finnish news outlet YLE reported. The ex-hockey pro, who previously starred on the Finnish version of “The Traitors” reality show, recently moved out after the relationship ended but had remained “somewhat involved” with his former lover, investigators said.