Welcome to Gaia! ::

I don't think it's anything to be afraid of.
But if you do, just expect that you'll probably have some problems at first, but you'll both get the hang of things and things should smooth out. It's just that going from not living together to living together can be tough on relationships because of clashes in cleanliness and stuff like that, but again, thing should smooth out.
My husband and I didn't live together until a few weeks before we got married, and our first year was pretty tough because there were times where he was disrespectful to me in not letting me know when he was going out with his friends and stuff like that (so I'd get worried when he didn't come home when I expected him to) and he was a total slob, but after that first year things are just so much better, and he's more respectful and tidy now, though granted because I am not working now I do do a majority of the cleaning. But he helps out when I don't even have to ask him to, which is nice.

So, yeah. But even if things end up not working out for whatever reason, you can always just move out.

Well I'm moving in with my boyfriend in 2 months so I'm going through the same thing!

It's not something you know for certain you're ready for, but for me, I went from panicking about making the wrong decision, to calm about my choice, to really excited about moving in, to thinking that any other choice would be wrong and stupid. All in the space of like a week. xD

Honestly it's scary but I guess I'm not too worried because yeah, you can always move out. I just think if it ends up being the wrong choice and something happens, then who cares, it's a choice you made. Just part of living and growing up, right?

It's a little different for me I guess because we lived in the same building all year. But so far this summer we've been living between each other's parents' house for like 3 - 5 days at a time. And honestly I love it, we have a great time, and when it ends, I just feel sad that we didn't have more time. So yeah, that's how I know I'm ready to live together.

You say he lives an hour and a half away? Have you stayed over before? How long have you spent continuously with each other? If it's not very long, maybe you could have a trial period if you're really worried? Like try living together for a week or something and see how it goes.

When Keeg and I got together, we just started spending a lot of time together -- like, DAYS at a time. We've easily pseudo-lived together for a few months already, and we're still pretty new at this... but hey, so long as you can work out your differences and remember to take of your responsibilities, I don't see how there really IS a problem other than nerves. :B I believe you'll make the best choice for you!