There is actually different forms. Usually its just (for instance myself) we dont get sexually attracted. So if we see someone who would be considered good looking we don't think of the fact of that just by their looks we want them ours and we dont imagine having sex and we believe usually that sex isnt what proves love or that it has anything to do with it. Its very complicated to go into but it is indeed real. I have never felt the desire to have sex with a woman or man I have loved and I dont get the feeling I need to. :3 I hope this atleast helped some