UFO Sighting in Nerja, Andalucía on July 31st 2004 – 2 lights in the sky changed direction then flew away

We were sitting at night on the balcony of our rented villa in the mountains just outside Nerja I was looking at the stars on the horizon just a little higher that eye level and noticed two bright "stars" that looked odd and out off place, both were level with each other ie like these two dots . . they then swapped direction in the blink of an eye to being vertical : the bottom light went into the horizon (sea)?and the other flew straight over our head. 6 adults and 5 kids all saw the same thing and cannot explain what we saw