Dating a rich person

I am almost 21 female kind of dating a rich 31m, while I do not come from a well off background. He told me he likes me very much and wants to marry me, he does help me a lot and i really like him very much, he's my only helping hand but i have realised that he is too rich to understand a lower middle class girl's perspective and we are poles apart. I am unsure whether to proceed further or not. He was the one to propose me first, i have met him first 2 years ago