To do it, or not do it? That is the question!

10 years on and off from dating the same guy. Gone multiple vacations together, spent weekends together, even share everything together.....I've heard that it's a good thing to move in together before making the big move of getting married.....but is buying a house together before even living together a bigger step than getting married?

We have a closing day in may 8th and already beginning to have cold feet. And quite frankly, I'm so scared and wouldn't even know how to back down on it.

Maybe it's cold feet, maybe this feeling is just adreline, I don't know.

Maybe I'm just desperately seeking for approval, but am I doing it for the wrong reasons? If I were to back out in all this, what would be the consequences for all this aside from my relationship would probably be no more?