I like that you chose one of the few genres of metal where it does actually end up being about love... in the metaphorical, "love and kindness defeats evil" kinda way.

The only more "love" genre would have been hair metal.

Death metal would have been a better choice, but then that statement is valid most of the time...

Until it starts bordering on goregrind, and ironically becomes about "love" of a different, one way kinda sense.

EDIT :

• Power metal : love in the romanticism sense, those on the side of love and good defeat those on the side of evil and hate
• Hair metal : love between a man and a female * , or between a man and his money or love for hedonism
• Death metal : the absence of love makes me want to die.
• Goregrind : I love to fuck these corpses!

* female as opposed to woman, since the hair metal guys are sometimes into under 18s.

Metal in general. Not too many lovesongs there.

And the exceptions sound like this: https://www.youtube.com/watch?v=-t7z-UXllBM

And Punk Rock