Navigating the choppy waters of relationships means spotting those subtle (and not-so-subtle) warning signs. This list dives deep into the common "red flags" that might make you pause. From the infuriating habit of canceling plans last minute or being perpetually late with a flimsy excuse, to the more passive-aggressive "I don't care" followed by criticism, these are the behaviors that can test even the most patient among us. Ever dealt with someone who sends a barrage of voice messages, forgets to return borrowed items, or constantly redirects conversations back to themselves? We've ranked them all, so you can better identify when to proceed with caution.