My fiance wants to make our cat our best man.

[Navy]

The only problem I can see is that if you're (presumably by the age of your cat) 18 and have been with the same person since you were 14, you probably haven't tested the waters to see what's out there all that much. I think it's hard to know if you really love someone until you've been with a lot of people you definitely do not love.

However, no one can predict the future to know how happy your marriage will be, so congratulations. I'm not sure about the cat as best man though. It seems to me something that will be funny in the moment and for a year or so, but when you watch the wedding video in a decade will seem a bit kitchy.

The problem with that is, I've never really been interested in anyone else.
While everyone else in my class was chasing boys, I was uninterested, I just didn't see the point of dating with no feeling attached to it, and anyone who was interested in me were promptly turned down. (And I was called all sort of nasty names like the C and B words, along with stuck up for that reason)
My fiance and I started out as friends and we moved up from there.
I understand what you mean, though, if it were the other way around, and someone my age was engaged, I'd think "Are you sure you know what you're getting into?". You're not the first to tell me this, and I appreciate advice, I just don't like the idea of someone telling me I shouldn't do something without knowing the exact situation.

He's one of those guys I literally cannot picture myself with anyone else. It's hard to explain to someone who doesn't share the same feelings, especially as young as we are.