What should I Do about This?

If you both love each other a lot say yes if your not ready don't. Don't wait to long.

You are under 18. If you talked to anyone 21-23 they will say "omg, when I was 18 I was such an idiot." When I've spoken to women who were 40 they recall not being ready for marriage until 30.

You are still finding who you are and developing your values. I don't care what he means to you or says, No one at that age is ready for the responsibility of marriage. Trust me, save this post and open it years later and you'll be glad you didn't marry this person.

Sure it's endearing and great, but just say NO... Others will back me up on this.