moving in with my boyfriend 18...

sooooo my mom doesn’t approve and shes saying im not smart enough and have the mind for it or something. im currently in school i was gonna switch my schools out where my boyfriend lives and continue to go & i was gonna get a job and all. im 18 years old and shes saying im too young😑 she swears im “young” i may be “young” but at the end of the day im not stupid and im of age to do what i want. shes saying all this rude stuff to me. i know she loves me but its all unnecessary. i live with my brother rn bc my mom n dad moved to ohio im currently in PA. she wants me to come up there so bad but honestly they put me thru so much im not happy up there anymore. im not happy where i am either. im just ready to go fr. my boyfriend is the only one who makes me sooo sooo happy man. we have been together since k was 16. hes 20 now & im 18. like why is this so wrong to her?😞 we all have to start from somewhere!!!!