Ideally yes. This is me and Mrs. Warp Core and I wouldn’t change it for the world.
However…
Well, let me put it this way. Ever have a best friend that, after spending a lot of time around, you find out that you actually can’t stand more than a few hours at time? That is absolutely a possibility here. Only now their stuff is in your house (or vice-versa), and/or they’re on the same lease.
$0.02: It may not always be advisable, but absolutely benchmark the practical aspects of your romance long before tying the knot. Long-term co-habitation is not the only route here. Consider other ways to rack up large blocks of time: getaway vacations, long weekends, or even just “play house” for a few days at a time. You’d be amazed at what horrible, terrible, filthy, obnoxious habits your partner has when “at home.” The reality is that everyone is a bit (more) of a mess in private, and the only real question you have to answer is: “what am I willing to put up with?”
Another, also very amusing, take on this: https://www.youtube.com/watch?v=yzGqp3R4Mx4