Bitacora, the spectacularly landscaped sim that looks very much like the American Southwest, is a great place to take your romantic interest. It is also a great destination for some unique photography. Chairs which attach to balloons and float in the sky, floating chairs, hidden caves, and a town center where you can do all sorts of things make this a great place for couples. Highly recommended for a visit.
To visit Bitacora:
To see more photography and my review of this destination in August: