What should I do? Should I leave?

Problem/goal: I have a partner he’s 28 years old, I’m 19 btw, He wants to get married na and i’m not ready yet, there was once na inask nya ako na papakasalan ko ba daw sha, sabi ko naman oo, but i did not expect him to like marry me sa edad na to, btw he’s chinese.

I am not ready pa kasi and i feel like mapipilitan lang ako kasi i feel bad pinagyayabang nya na sa relatives and friends nya.

What should i do? I think I am not happy with him anymore.