Boyfriend says I'm close minded

my boyfriend is 18 and I'm 20, he's so worried about the world and what's happening. Is so frustrating because he doesn't enjoy anything he's so negative about stuff and I'm just here looking at him lost. Once I bought a necklace and he said why I bought it the government making people to spend money etc. I'm studying for nursing he said is a waste of time because I'll be in debt etc. Now he wants to try LSD and I told him that if he does it I'll leave, now I'm the worse gf ever I'm fake etc... idk what to do help