Do you trust your intuition?

Have you ever heard someone say something like this to you?

"I knew in my gut that he was cheating on me. I just knew it. But I chose to ignore it. I wish I had trusted my instincts!"

So, tell me, if you're feeling like something is a little off in your relationship, what do you do? Do you trust your instincts or do you just ignore it because you're afraid that if you're wrong, you'll wreck the relationship? How do you find out what's "really" going on without wrecking the relationship?

Do you get sneaky? Get creative? Or do you just go at the problem head on and confront him/her?

Would love to know your thoughts!