Thursday morning, a jury found Jacob Klein guilty of second degree murder in the 2022 death of Philip Rabadi.
Klein stabbed Rabadi inside the victim's New Scotland home. He was upset over Rabadi's marriage to his former girlfriend.
Police said Klein, a past acquaintance of Rabadi's wife, stalked him for three days prior to the murder.
He faces 25 years to life when he's sentenced in December.