What makes this day feel so special for you, Aquarius, is that during Moon trine Neptune, you feel like ... yourself, and while that may be obvious, it's taken you a long time to accept who you are.
How this translates into love is that because you now feel so good about being yourself, you can come off as less structured with the person you are in a relationship with.
What's more is that you feel as though you can get out of the way for the first time in a while, because you've sort of stolen their spotlight and they desperately need their chance to shine.
It has nothing to do with the actual relationship, and so much to do with the person themselves.