He said “I’m pretty sure you’re the one”

So I’ve been dating my current boyfriend for about 6 months. So the other day at brunch he says to me “I think you’re the one.” Now I’ve been saying this to my friends since we started dating. We’ve been talking about finding an apartment together. And I made a comment about how living together before marriage is important to me. And he’s like you know if we keep going down this road that’s how it’s going to end up. Now all my friends were saying he’d propose within 18 months and I laughed it off I don’t like to be surprised but he does know what kinda ring I like and such because I’m picky and e made a comment about “well who’s ring do you like.” And a girl was sitting at the bar and I was like that one right there. Hahah. But like is it really coming that soon ? Not that I would say no but i feel like its soon. And like I’ve never dated a guy who so openly talked about the future.