Love poetry may or may not be romantic, but it always has something to do with passion. A poet need not be writing about a significant other or a relationship when writing a love poem, for writing itself is a passion, and what writer does not love to write?
One can, of course write mechanically without passion, and that most certainly has been done by a great many. But the soul of a poet is one of passion and love, and that translates into each and every piece of work.
There is the obvious type of love poem that deals with a specific object of one’s affection, to use a common expression. But one can also love the entire human race, the planet, and the universe. One can most assuredly love one’s God as one understands God. In fact, if one does not love humanity, how does one purport to love a specific member of that species? Without love of all, how is love of one possible?
In the final analysis, we are all a part of this magnificent universe, and we are all of that Oneness. And in that realization lies Love in its truest sense, the kind of Love that gives rise to the most eloquent and profound of love poems.