The magic is always there in the beginning. It's more than just the novelty, but that's part of it. Ime, I would love to get that magical roll back, and I'm actually going to try some methods to see if I can get it back.
Personally, and in all honesty, I'm already a happy and loving person with a lot of good things ahead of me, along with a great significant other. A substances "magical" high/empathy/wow factor isn't really necessary for me, or even up there on my list of priorities. The real important things in life matter much more, aka the "things we need to do" and especially the people around me that I care about. For me, this is all fun and recreation with a side of personal and spiritual benefits, and that's it. Plus, I have a feeling this goes for the majority of BL as well. It's clearly not as important as our next job, career, or major life change, but it's definitely a passion.
But I bring up my personal viewpoint because it seems like you are putting too much stock into that one mdma trip. I hate to sound like a sexist, but I'm assuming you're a girl and generally girls think more, and are more emotional by nature. An mdma trip can definitely supplement a relationship in a positive manner, but it can do the opposite as well. Which I have seen before, but as you get use to its effects and prepare yourself mentally, you'll be able to curb the tendency to let mdma's effects influence your emotions too hard. But what do you want out of your mdma trips? You as a person will be much more of a factor in how your mdma experiences will go, but you have control of that for the most part. You can use the epiphanies you gained from this experience and use it for the better. Mdma tends to have that effect if the person is determined to make improvements in whatever area they want. And that's something anyone can change, sometimes even in an instant, if they want to.
I'm not sure how old you are, but I am surprised about the general negativity, emo status and overall cynical nature of the current generation of teens/20 somethings. This is a hugely broad statement, but it's something I've observed for a while, including among once close friends who should now be in their mid to late 20's. This is in comparison to the generation I grew up in. I was once a really negative person because I was going through so much, but literally everyone around me was full of hope, positivity, and purposely chose to concentrate on the good instead of the bad. This was in my teens and it's still stuck with me today. But this discrepancy seems to be a product of our society changing for the worse during the 2000's, not coincidentally along with the economy, and with even the internet being one of the prime reasons. There is so much hate and negativity, and they heavily outweigh anything positive. Before the rise of the Internet and social media, it wasn't like this for sure. People would think twice about saying something in person, but in the virtual world people will say anything. I think if I grew up in that kind of environment, I wouldn't be the positive person I am today.
Anyway, this is just how I see it. Only you can make the judgment of what's the next best step in your relationship with your SO. If anything, mdma is best used with the intention of positive changes. It's actually not the easiest thing in the world, but it can be done. (The only time it's easy is if you're in the right mindset for it). There are currently trials being done by MAPS to study its potential benefits for people suffering with ptsd. What this says to me is that there is a strong belief that it can be used to overcome very difficult personal problems, so with that in mind mdma can be a powerful tool (like said above) to help change your life for the better. It certainly has for myself and many others, so it can for you too.

Just know that everyone can reach that if they want to. Mdma isn't life; it's just a really enjoyable, unique substance that can be used for fun and healing with the right set and settings.