Boyfriend smashed my friend's phone because he was mad

The thing is, i excluded him from a plan at my house bc my friends wanted privacy but then i did all kinds of horrendous acts (smoked so much meth, friends brought over a guy everyone inc my boyfriend hates, got sexually harrassed for free crack, etc) and when he got there he got so mad at the whole situation at my place. So i lost my hoodie, idk who took it so i told my boyfriend and he was like "so those wh*res also stole ur hoodie? Well guess what, i got ur revenge for u. I secretly took Chloe's phone, went outside and smashed it with my boots HAHAHAA" And he said it like it's the most normal thing to do so i acted normal and happy that he got my revenge lol. But now i feel weird bc she just called anxiously and asked about her phone. She said she left it at my house and she thought i have it but i told her it's not here. Now the poor girl doesn't have her phone and i'm kinda the accomplice and God knows what important things she had in there or if she can afford another phone, i just kinda feel bad and i'm amazed at how my bf thought it's a good idea to steal someone's phone and break it just bc he was mad at the situation. What would you guys do in my situation? I'm just at a loss, i can't believe he did that so normally.