Goldigger?...i dont think so ...but maybe

there is this guy i really like and he has money im not gonna lie and i like stuff...who doesn't ?....he offers to buy me stuff and i don't turn him down that we be wrong...i do like him a lot but the only problem is our ages...im a teenager kinda under 18 and he is 20 it isnt that much of a problem i think and he doesnt ask me for sex but he probably expects it. i'm gunna make him wait for it but i just wanna know is what im doin wrong?