Often we take personally the slings and arrows of our 'abusers'. But frequently we are merely the interchangeable pawns of their own neurotic dramas. Anyone else in your position would have received the same treatment. There is nothing especially noxious or negatively noteworthy about you.
More learning can occur when there are many obstacles then when thear are few or none. A life with difficult relationships, filled with obstacles and losses, presents the most opportunity for the soul's growth. You may have chosen the more difficult life so that you could accelerate your physical progress
Throughout history, humankind has been resistant to change and to the acceptance of new ideas... When Galileo discovered the moons of Jupiter, the astronomers of that time refused to accept or even to look at these satellites because the existence of these moons conflicted with their accepted beliefs. So it is now with psychiatrists and other therapists, who refuse to examine and evaluate the considerable evidence being gathered about survival after bodily death and about past life memories. Their eyes are tightly shut.
Eventually we will all understand that all wisdom is within us, and as we remember, practice and access this wisdom, we will become our own best teacher.
Sometimes, soulmates may meet, stay together until a task or life lesson is completed, and then move on. This is not a tragedy, only a matter of learning.