[contentcards url=”https://nypost.com/2024/08/30/us-news/long-island-divorcee-who-allegedly-gunned-down-ex-wife-her-lover-in-million-dollar-home-scowls-as-hes-led-by-cops-in-handcuffs/”] By Olivia Land The Long Island man who allegedly gunned down his ex-wife and her new lover inside their million-dollar home this week…