Should this freak me out?

I’ve been seeing a guy for about a week now. We’ve been friends for over 4 years, but I was dating someone at the time and I didn’t see him as more than a friend. But in the week we’ve been talking I feel like everything has gone fast. I caught feelings super quick and already picturing my life with him. I’ve met his family and introduced him to my friends. Last night when he left he said something like “you’re going to be my wife.” Normally that would be a little.. weird. But I find it sweet. And I’m not even freaked out by it. Am I crazy? Lol