Intuition and Cynicism?

Sometimes, when I'd get to thinking about things, recently about my relationship I'd have "unwanted thoughts" come into my head. You know the usual things like, does my boyfriend really love me? Is he cheating on me? Does his "girl friends" know he already has a girlfriend? And the list can just go on every night. You get my drift?

I'd guess, I'd have to say it stems from previous failed relationships. Guilt on something that I've done in the past, maybe I've overlooked a possible bad karma. So I began to wonder, is it intuition? Or pessimism and cynicism?

How do you tell which is which? Once or twice in the past my intuition or paranoia had been right when it started nagging on me that my ex was cheating on me. And they say that a woman's intuition is so strong, it's almost always right. There had been time's I've proven that. So when can you call it intuition? When are you just being paranoid?