We all have some disgusting personal habits. They're sort of an unofficial part of being human, right?

But what happens when we get caught in the act of some socially unacceptable behavior — especially when we're in a relationship?

Judgment, embarrassment and dismissive cover-ups occur, of course.

While Sex in the City once dubbed gross habits as "secret single behavior," some brow-raising, off-putting behaviors aren't even discreet, and end up driving frustrated partners up the wall — if not out the door.

LifeHacker.com readers revealed some of the nastiest habits their partners have displayed in real-life relationships, and some of them are downright gag-worthy.

Gross Habits That Can Ruin Relationships

Check out the 12 grossest partner habits as revealed by LifeHacker.com.

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