MENtal problems

So my bf and I have a deal where if I dont drink he won't smoke weed. however this weekend after I go to his house I planned on staying with my friend and having a girls night. (with drinking) I asked him about it bc I didn't want to go behind his back and at first he said no. then he finally said "You know what I dont care do whay you want" he's been practically ignoring me all day😭 what do I do to make him not mad at me?