I never know what to say

Me and my bf have been getting a lot of " so, are you guys gunna get married?" And, im always the one asked so im like... dude idk ask him! And he always just smiles but never says much, or will say it isnt the right time and we dont have the money, which honestly im in no rush, he already told me when we first got together he wanted to be with someone for at least 5 years before hed propose. But how do i deal with people asking because its so fuckin awkward to be like, uh idk, ask him...