Christel Yardley/Stuff Ryan Joseph Wenzlick went off for morning milking, then returned to his former partner’s house and attacked the new object of her affections. Unable to accept a former girlfriend seeing someone new, a "love struck psycho" entered her house and attacked her new partner with a hammer. The man was asleep when Ryan Joseph Wenzlick, 27, committed the "explosively violent and inexcusable" act, causing a lasting brain injury. Wenzlick, a former farm manager, pleaded guilty to attempted murder and assaulting his ex in Cambridge in July 2020. And he was at the High Court in Hamilton on Friday morning, where he was sentenced to six years and four months in prison.