There are two teenagers in the video, they met in a laundry shop they kiss I guess and after that, I only remember that they undress and make love and while their doing that the camera circles and switches around them. And there is a necklace which has a silver pendant which has a sexual position, I think the pendant represents what they are doing in the moment. And after that or before the music video ends they are in the top of the building and they are kissing while the sun is setting.

It's a rock song from around 2005, thanks for your help!