At its worst, your relationship was the emotional equivalent of junk food: good for some jollies, but with very little real meat to it. It is possible that one of you was in the relationship primarily because of your physical connection, while the other wanted more of an emotional bond. If this describes your pairing, caution was needed, because such a mismatch of desires may have been what led to disaster.
Jealousy was another area of trouble for the two of you, with both of you insecure that the other had a wandering eye. You may have found yourself behaving in uncharacteristic ways: checking up on your partner, asking too many questions. In a weird way, the sexual heat of your relationship masked a rather cold center, and it may have left you feeling emotionally malnourished. Nonetheless, you were well-placed for growth if both of you had been willing to work on the relationship. You need to learn to shore up your confidence and learn to trust. Rather than demanding, try to calm down and wait for what you want. You like action, but in relationships, calm is needed instead. Strive to be kind to future lovers,and your love will grown in fertile soil.