Bf getting mad at me for skiing

boyfriend is getting mad at me for skiing this weekend when he goes out and skates all the time with his friends? is this normal? i’ve never given him shit for skating with his friends, they go all over LA wife no masks and i’m just going to the slopes to ski with my sister and her friend and her brother WITH MASKS and he’s getting upset about it? is this normal? he was threatening to not see me for weeks if i went