I like the sound you have going and I can hear what you're going for and I know this is a work in progress so I'll tell you what I think,
With any piece really that isn't complete you need more substance. It sounds almost as if one hand can play the majority of this piece. Stick in some sweet melodic chords here and there. One of my favorite love songs is Theme of Love from Final Fantasy IV. Awesome love long, check it out and I'm sure it will inspire you to make this piece kick some butt.