The hardcore Leafs fan was at home watching the game while wife Hailey Bieber attended The Met Gala last night. 🏒 Go Leafs Go!⁣ ⁣ 📷: Justin Bieber//IG⁣ ⁣ #Leafs #JustinBieber #HaileyBieber #GoLeafsGo #PopNews #TheMetaGala