There's something a little off in your relationship history, something unhealthy lurking just beneath the surface of each pairing. Were you or your lover dealing with issues of addiction? Was one of you being unfaithful to the other?
Did problems from the past make themselves known in the present? There was something fishy going on, but it was insubstantial, difficult to grasp and see. But likely it could have been that you weren't looking honestly at your problems, that you ignored what you saw and just blithely focused on day-to-day issues. You didn't dare look any deeper; in your heart of hearts you knew there was something your lover wasn't telling you. It's always been difficult for you, the straight-ahead communicator, to read signs and vibes, but you're going to have to learn, and fast, if you want your relationships to improve.Your best bet in partnerships is to to face your problems squarely. Bring them out into the light and they won't seem so mysterious and looming. Ask questions. Listen to the answers. It's not that your lover means to withhold information, it's just that you're so intimidating at times. Your relationship problems aren't insurmountable, just difficult -- and figuring out what you have to work with is your first step.