I need help!!!

So my Boyfriend is Vietnamese and since 5 months now a stranger moved in with his family and i just can‘t stand her , she always just enterd my boyfriend room too clean it and already broke one of my clothes and she stole my necklace my boyfriend gave me . And she is such an annoying person in general . My boyfriend never does anything against it rather then tell me how sick he is of her and he wants too move out and stuff but those are just empty words i ask him if he wants too come with me too my place but he says no ... so i guess he doesn‘t care at all . And i just can‘t stand her anymore and i don‘t want too go too his place as well . Today i brought my dog and this crazy bitch just kicked the vacuum cleaner in my dogs face and she was generally so rude towards him and she is always rude towards me ...i told my boyfriend i don‘t want too come too his place anymore and he says ok , if i want too leave i should leave and i‘m like boy is our relationship less important than this shit?? Or what is going on?? He is old enough too just move out . I literally don‘t know what too do i love him but i don‘t think i can continue this if this stupid bitch is still in my life..what should i do??? Pls help it‘s making me so mad