She's your sister friend. He's your roll dog. Your kindred spirit. You've shared tabloid-worthy secrets, celebrated successes and you offer motivation when life gets tough. You love your best friend and would inevitably do anything to protect him or her. But what do you do when you can't stand the person they're dating?

She's trifling, he treats her badly or maybe you just get a bad vibe. Whatever the reason, you just don't like the new significant other and think your friend must be suffering from temporary insanity to put up with this person's mess. Instead of making your friend choose between the two or creating an even more awkward situation, here are four ways to make peace and keep your friendship intact.