Similar experience here. It triggered the thought in my mind of "this feeling exists". It's weird to explain. It's like MDMA created a reference in my mind and, instead of making me to fall into the process of "I need the drug to be happy", it made me to search for things in life that bring me that feeling of happiness and comfort I got as a reference from the experience. I remember vividly the walk to home after the party, with a beautiful girl holding my arm, the hot shower afterwards...it was the first time in my whole existence that I honestly thought "life is beautiful".