Honestly...it DEFINITELY can. A lot of shyt get exposed.
Speaking from experience, when I moved in wit my ex in Atlanta...that was the beginning of the end. She pretty showed another side of her that I honestly never knew was there.
Her jealousy...possessive type behavior pretty much came out after moving in. Sold me on how we would be doing so many things together, when actually...she just wanted to keep an eye on me. Shyt was just turrible. Ended up moving back home.
But I'm glad I went thru that b/c I took my time wit my current b4 we moved in. Made sure I wasn't dealing wit a split personality. Lol