Uh, magazines aren't really a medium
Sorry, the art major in me had to say that.
I think almost all of your choices can portray love and sex quite well, as long as the artist is competent and knows what he/ she/ etc. is trying to convey. It also depends on the viewer's personal tastes. Some people respond more to theatre than a painting, and vice versa.
However, since I'm focusing on photography now, my favorite mediums to convey sex are photography and film. I'm not really interested in the subject of love, at least for the time being.