My boyfriend thinks its cool to give our dog weed??? The dog acts really weird after! HELP!!!?

My boyfriend is a major pothead...him and his stoner friends do nothing but smoke weed ALL DAY(hes currently unemployed & collecting unemployment) & our dog BonJovi is a 1 yr old purebred pitbull & hes my baby!!! Hes the cutest sweetest thing ever & lately my dumb b.f 's been blowing weed smoke in his face & you can tell he doesn't like it!!!..he'll sneeze nonstop & run under the table trying to hide. but my b.f just blows it in his face!! So duz his dumb friends!.. Just before he grabbed him by the snout & blew it directly in his nostrils!!! All his dumb friends laughed!! I yelled at him & took Jovi in the other room. (i dont smoke weed either) I felt so bad for him bc he was walkin around acting really weird and looked sick. There baking "special" brownies right now & said hes gonna feed it to him!! We dont have locks on any of our doors in our apartment so I cant lock jovi in a room & none of my friends or fam is awake right now to go somewhere else..+ i don't wanna just show up to my parents house or friends & say HI CAN I STAY HERE FOR THE NIGHT MY BOYFRIENDS A POTHEAD IDIOT!!! uhhhh what should i do?????? HELP! :(