bf family issues

so I've lived with my bf for 1 year and we've been together for 2 years almost 3. I've done almost everything in the house ,cook,clean yadda yadda BUT then his mom started invited guests after guest's..I mean it her house she's allowed to. But is it fair that she makes me clean up after everyone Everytime! She hasn't cleaned up the house since Christmas and ontop of that She starting to talk shit about me to everyone in his family EVEN though I've done SO much for her! Thank God not much of his family believes it and they call me immediately. Your probably wondering why do they call me when his mom is blood and I'm not..Well let's just say his family knows she doesn't act like a mom and won't be satisfied with anything her GREAT SON/ MY BOYFRIEND accomplishes. He just got accepted to his dream A+ college and she doesn't say a word BUT she does talk shit saying how he won't leave. He doesn't TRUST his mother for anything. At first I never knew why till NOW! Shes manipulative and uses you just to get her way. PS SHE WANTS HIM TO START DOING DRUGS where I am NOT for it!!! If you wondering why we haven't moved out we waiting for him to finish hs and then we getting far far away! Oh and also his dad does nothing but agree to everything she says as if hes under a spell (Yes she does dark magic but idk if y'all believe it or not) WHAT WOULD YOU DO IN THIS SITUATION???!!